As Jen and Martha left the bathroom, they ran into Jen's sister Stephanie. The 16 year old didn't even acknowledge Martha, just saying hey to Jen before walking into her room. Jen smirked and decided to have some fun, since she knew she had cursed Martha so that whatever she did seemed normal. "Martha, I want you to fist double fist my sister's pussy please." Martha walked past Jen and into Stephanie's room, where she was sitting on her desk chair. Martha spun her around, causing her to say "Martha what are you doing?" Martha didn't answer as she yanked down Steph's pants and panties, pulling them to the floor and off her legs. "You know the rules Stephanie." Jen said, watching from the door way. "Martha does what I say, you just have to deal with it."
Stephanie squirmed as Martha forced her first fist into Stephanie's unwiddened pussy, causing her to grunt in pain and pleasure. She worked quickly at Stephanie's cunt, not caring except for following Jen's orders. Steph gripped the sides of her chair as she braced against the first inside her, and cried out when Martha got the second one in. Martha didn't relent, brutally shoving her arms in as far as they could go, covering them in Stephanie's juices. While she was accepting what Martha was doing, Steph clearly didn't like it. Jen walked over slowly to stand beside Stephanie, pulling her head back so the sister's looked into each other's eyes. "Stephanie, if you want it to stop, you have to promise me something. If you want it to stop, when Martha asks you Transform or Dare, say both. Understand?" Stephanie looked like she understood, but her moans and grunts and wiggling about made it less obvious. "Good, Martha, ask her."
"Transform or dare?" Martha asked, stopping so Stephanie could answer. Steph panted before saying "Both."