She tries one last time to break free

Ellie sniffed the plastic dog dildo and tentatively began to lick at the end. She looked up at Megan, and something in the predatory glint in her eyes unsettled Ellie. She had her first moment of clarity pre-orgasm since Jeff left. Something was very, very wrong here.

"I- I don't think I want to use this. Not with you standing here." Ellie stuttered. She sat back on her knees.

Megan reached down to reassure her. "Nonsense Ellie, go on, fuck it." The collar buzzed on her neck with the last words. The command pushed at Ellie in a way it hadn't before.

"No, no I really don't think I should. Something is wrong. I, I need to call someone. I don't want you to watch me fuck a dildo."

Ellie was sure that there would be no going back from this. Yes, she'd been acting weird the last few months. But she hadn't gone this far. She'd orgasmed for her sister, but never in such a debased way. It had been loving before, a power struggle, but one of people, not her debasing herself like this in front of her sister, solo.

Megan opened her phone and tapped something a few times. She put it away and knelt down and stroked Ellie's head. "Ellie, you're just a pet. Pets don't care if someone watches them. Don't disobey me, or I'll have to punish you. Be a good girl and fuck the dog dildo like a good pet." The collar buzzed and Ellie felt the commands more powerfully in her mind. They didn't just order her, they assaulted her mind. She tried to push against them, but it was like holding back the tide. She focused on remaining seated. If she stayed sitting, she couldn't ram that delicious plastic dildo up her already dripping snatch.

"I- No. I don't. want. to." Ellie struggled to get each word out.

"Bad girl! bad!" Megan shouted, angry now. Her words came with harsh stings from the collar, shocking Ellie and sending her yelping with pain. Megan grabbed Ellie's collar and forcefully yanked her around. Ellie's mind was a mix of pain, need, fear, and hopelessness. She couldn't work her arms or legs. She felt Megan positioning the toy in her pussy, and she tried to pull away, but as soon as the tip entered her, the collar began pulsing command into her mind so strongly that it blocked out everything else. fuck it. fuck it. fuck it. fuck it. fuck it. She could think of nothing else in that moment, as her hips began to rock back and forth on the plastic phallus.

"Good girl, good girl Ellie. You're such a good girl," Megan cooed over and over. "Momma's here, you fuck yourself with that dildo for Momma." Ellie could barely hear her, but she felt warm with the praise. She was a good girl. She was a good girl. Fuck it. fuck it. fuck it. The collar sang to her. Her collar. After all, she was a pet, and pets wore collars.