Go upstairs

I went upstairs. Kristin was standing in the bathroom with the door half closed, her robe open admiring her new tits. She caught sight of me in the mirror and quickly closed her robe and shot me a disgusted look.

"What are you staring at?!" She barked as she closed the bathroom door.

"You jumped up so quick I was checking to see if you were alright" I said to the door.

I go out of my way to do something nice for Kristin and she's still bitchy to me, unbelievable. The door open and as soon as she saw I was still upstairs she glared at me. I had had about enough.

"Kris, open your robe." I suggested.

"What? Fuck you." She said as she opened her robe and fondled her breasts.

"Go on into the bedroom." I told her.

She tried to protested briefly but still did as commanded. For simplicity I decided to transmit the rest of my commands telepathically to her. Kristin lay on the bed and opened her silky robe exposing herself fully. She wore only a pair of satin panties. As I watched she leaned over to her nightstand opened the drawer retrieved a fairly robust vibrator and bottle of lube.

As Kristin pulled aside her panties and drizzled lube on her pussy she pleaded "I don't know what you're doing to me but I can't stop...get out of here!" She caressed herself with her index and middle fingers.

I told her, "You're just doing what you'd do if no one was home Kris." She effortlessly plunged the vibrator into her snatch and began slowly pumping it in and out while it buzzed her clit.

"Stop watching me! Get out!" She shouted. She was taking quick breathes now.

To my surprise I heard Jaime from behind, "Oh my GOD. Kristin, you're SO GROSS"

Not slowing at all Kristin yelled back, "I'm not gross, I can't stop it's your brother!" She rolled over on her stomach and put her ass in the air, still fucking herself with the toy. Jaime pushed past me and reached for the doorknob to pull the bedroom door shut. Her arm went limp and fell to her side as her legs carried her into the bedroom.

Jaime crawled up onto the bed and took over fucking Kristin with the toy. "JAIME STOP..oh, OH.." Kristin's protests devolved into a series of pants and moans as Jaime began fucking her hard and fast. "I can't stop! I can't stop!" Jaime yelled.

Kristin's asshole glistened and gaped, Jaime licked her thumb and started to rub her step-mother's asshole. Her moans were muffled by the comforter she was biting when Jaime stuck a finger in Kris' ass, it sent her over the edge. Kristin's tight ass gripped Jaime's finger and her pussy convulsed.

Jaime was still resisting and complaining right up until the moment that she pulled the vibrator out of Kristin and started to lick it clean. At the same time she inserted 2 fingers into Kristin's pussy and began massaging her g-spot.