She will try to make her beg to cum

“You claim you aren’t some slut with a dehumanization fetish. If that were the case your pussy, your wet and open pussy...”

Samantha, still cold with teeth chattering, looked under herself at her naked body to see her loosened pussy lips from a day of exposure and humiliation and got embarrassed. She wish she could prove that this wasn’t what she wanted but she also knew Tiffany didn’t actually care, she just wanted to make things as terrible as possible for her.

“... well it wouldn’t be wet and open. A normal girl in this situation would be tight and dry. You’re begging to cum!”

Samantha just shook her head as the cold water continued to hit her.

“Okay, fine, here’s the deal. If you can hold out for five minutes of me playing with you without begging to cum I will believe you. It won’t save you from being my pet but I’ll believe you.”

Samantha was shocked at the idea that her own sister wanted to play with her body but knowing it was just to humiliate her she guessed Tiffany didn’t see any problem with it.

Tiffany opened her bag and set a timer on the tablet that she used to control Samantha for five minutes and put it to the side to be out of the way of water. Tiffany wondered if breaking the tablet would immediately free Samantha or trap her on a more permanent basis. She decided now wasn't the time to find out.

Tiffany returned to her sister's side and then reached for her breasts. Samantha reached her arms out weakly trying to block Tiffany.

“Try it, I dare you.” Said Tiffany looking like she wanted Samantha to challenge her so she could dominate her further.

Samantha meekly placed her hands back down and gave Tiffany free access to her boobs. She knew she could hold out for five minutes so maybe just having this as some sort of win might lift her spirits which had never felt lower.

At first Tiffany gently massaged her sister’s nipples with her bare hands and Samantha closed her eyes to pretend she was with a guy. The cold shower combined with the stimulation made them harden to the point they hurt as Samantha’s breath quickened. The cold water had long since washed her of any filth and it only served to make her cold and shiver. Unfortunately, that only made her sister’s warm hands feel all the better as they comforted her and warmed her.

Her sister tugged on her nipples gently and she let out a low moan that she immediately tried to hold back. Her sister grinned as she pulled and tugged on her nipples. Samantha felt herself getting hotter and as she released hurried breaths.

“The facade is crumbling, the real Samantha, the naked pet... hmm... my little Puppet is starting to show”.

Samantha hadn't imagined she'd even be stripped of her name after losing everything else but knew if her sister saw an opportunity to take her lower she would.

"Puppet is such a good name because I control you and you know your role is to be controlled. You're accepting it further with every rub."

The timer was at four minutes and Samantha knew she would never beg to cum under these conditions. Suddenly Tiffany reached back and spanked her wet ass.

"Oh, I forget how much you like it when I spank you. You know you need correction and to be deprogrammed of the belief that you're anything other than my little Puppet."

Samantha shook her head and she got another spank this time much harder.

"I'll stop when you tell me you like it."

Samantha averted her eyes but wouldn't lie to save herself.

Another spank this time even harder came down and Samantha jolted forward but Tiffany held her nipple with her free hand not letting her go. Samantha felt trapped as Tiffany started to smack her ass alternating between cheeks and hitting both as hard as she could. Tiffany got behind her and started to drum on each cheek as hard as she could, smacking her and watching her cheeks jiggle before doing it again.

"Oh your pussy is wet and begging for touch but you claim you don't need to cum. Maybe I should work on your asshole instead?"

Tiffany took her pointer finger and tapped twice on Samantha's butthole. Samantha shot forward but Tiffany grabbed her hips trapping her again.

“At least that hole is tight.”

Samantha realized Tiffany knew no limits and wouldn't hesitate to touch her anywhere. All she could focus on was the beating of her ass which was now quite red as she shivered away under the cold water. Samantha held out for another minute and the timer dropped to three minutes before she was ready to pretend she loved it to make Tiffany stop. Unfortunately without the ability to speak she had to wait to be asked.

After about six or seven more spanks because Samantha was losing track Tiffany finally asked "Are you ready to tell me you love being spanked?"

Samantha shook her head up and down through tears.

"Okay! See I knew it and before this is over I know you'll be begging to cum. Can I have just one more spank since you love it so much?"

Samantha nodded weakly as she just wanted it to stop. The cold water was still making her teeth chatter as she cried and was **** for some relief to her poor bottom.

"Okay, but only because you asked for it, Puppet!"

The shivering Samantha readied her ass for the final spank but was instead treated to Tiffany delivering an underhand smack to her pussy as hard as she could.

Samantha yelped and was shocked as she fell to the floor her pussy stinging and her ass incredibly sore while being pelted with cold water. Even after all this she couldn't believe her sister would touch her there let alone spank her there.

"I made that one special since I know your pussy is **** for attention!"

Tiffany let her hand rinse under the cold water.

"You'd think a girl who wasn't **** to cum wouldn't have left my hand covered in her juices."

Samantha wished she could explain how the exposure and nudity was making her wet and not that she actually liked it. Samantha then remembered Tiffany didn't actually care and was just trying to humiliate her and make her embarrassed of her own body's involuntary functions. She gagged as Tiffany grabbed her collar and pulled her up from the ground. As she returned to all fours as her arms and legs felt weak under her.

"back to those tiny tits and nipples, Puppet."

Samantha looked at the timer and saw two minutes and knew that with all the pain in her ass no matter how hard Tiffany teased her she wouldn't feel aroused let alone turned on enough to beg to cum. Instead Tiffany grabbed her nipples violently twisting them in opposite directions. Samantha yelped and was shocked again but was held from falling by Tiffany's rough gripping of her nipples increasing the pain. She continued twisting them as Samantha was able to stabilize herself under her hands and knees.

"Just tell me you want to cum and this will stop. Admit what you are. Admit that you don't deserve clothes, or a voice, or the ability to walk upright, admit that you're nothing but my naked collared plaything that only thinks with her pussy."

Samantha shook her head 'no' as she tried to deal with the pain, she looked to the side to see the timer at 1:30. When she did Tiffany released her nipples for a moment and then adjusted her grip so she was now pinching them and then went back to twisting. Tiffany twisted, pinched, and pulled and Samantha couldn't take it much longer. She looked down at the timer and only 15 seconds had passed. She knew she couldn't deal with the pain for another minute so she readied to debase herself as soon as the question was asked. Luckily or unluckily she didn't have to wait long.

"Do you want to cum?"

Samantha shook her head up and down begging to be released.

"Do you need to cum, Puppet?"

Samantha continued to quickly shake her head up and down as her nipples were in agony.

"Would you do anything to cum?"

Samantha didn't know what that meant but she continued to nod and finally Tiffany released her nipples. Samantha started to gasp as she felt the blood rush back into her nipples and was shocked for it. She laid on the ground with her sensitive nipples pushed into it and her stinging ass facing up at Tiffany. Samantha could only twist her head and looked up at her sister grinning with sadistic intent.

"I am such a good sister. Oh, Puppet, now how shall I help you with your needs? Or should I say 'need' since your need to be degraded and turned into a naked little pet has already been taken care of. I guess the only thing now is to give you that 'O' you need more than anything."

Samantha laid with teeth chattering as she tried to ready herself for whatever her sister had planned to give her an orgasm. She looked out the door trying to pull herself up and it seemed so far. She knew she couldn't escape and with her current luck would likely run into a man. She tried to pull herself up again and merely collapsed on herself as her sister finally turned off the cold water.

"Now for your treat, Puppet."