Yes/Chad/She's too emotional right now, just put her to bed romantically
Power or not, she's too emotional right now for it to be fair of you to have sex with her. You lift her into your arms, and she reflexively puts her arms around your neck. You get up from the chair and start to make your way to the stairs.
She looks into your eyes saying, "Chad I-".
"Don't worry," you say softly, "I'd never take advantage of you; but you need some sleep."
She pulls herself into hour arms more tightly, almost hugging you as you walk. It's easier than you imagined to carry her, even climbing the stairs. She couldn't weigh much over a hundred pounds. It gets a little trickier when you get to her door . . . then again, maybe not. If body parts are subject to the power, then maybe . . .
"Hey door," you say quietly, "could you open up, please?" A bit to your surprise, the door accedes to your request and opens wide. Apparently inanimate objects will obey you as well.
"Did you just ask the door to open itself?" asks Gwen with a giggle.
"Hey it worked," you answer as you carry her into her room.
"That doesn't make any sense," she says.
"It doesn't need to right now. You just need to get some rest." You gently lay her on the bed, and move to leave.
She gently catches your arm as you pull away, and pulls you back. "You don't need to go."
"Gwen, we don't need to rush things," you say softly. "Rest tonight. I'll still be here tomorrow . . . and every day after, for the rest of our lives." You wonder to yourself if you might be getting a little too corny, but from the look in Gwen's eyes she doesn't seem to mind. You kiss her gently on the lips, and she returns the kiss. You extricate yourself from your sister, and make your way to the door.
Suddenly you remember the nudity issue. You had completely forgotten in the gravity of the moment. "Oh Gwen," you say, "one last thing. The family is trying out naturalism . . . so we aren't wearing clothes in the house for the next week to see how it goes, okay?"
"Yes," she says softly, "I understand." She giggles. "You are making an incest harem with whatever it is you used to open the door."
You find yourself at a loss for words at the startling revelation that she fully understands not only that you have an incredible power, but one of the things that you're using it for.
"Don't worry Chad," she says, "I love you, you big dumb poser. I'm fine with it. I can even help you if you want. Now you'd better get back to mom. I'm sure she's worried sick about me walking in on you guys."
Well that was the biggest surprise of the evening.
What do you do?