Another snap or two?

You grin darkly and snap your fingers again. It's impossible for Laney to hide the full-body shudder this time as her lashes flutter and she has to bite her lip to hold back a moan. You rub her thigh gently and she can't hold back the instinctive roll of her hips, trying to push you away but finding that when her hands touch you she almost loses all strength and will.

"A-ashton--ghhuh--get out.." She weakly begs, slowly humping your hand as her mind becomes dizzy with arousal. "I... I don't--fwhuhh--know what you're doing to me, o-or how... but this... this is weird, and I'm not okay with it, and-"

Snap.

"GhhOOooh GOD!" She can't hold back the next one. You know she's at an 8, know her head is buzzing with so much lust that she's teetering on temporary insanity. Her hands grab yours and push it against her crotch, little gasps and noises bubbling free from her as she grinds on your hand hard and quickly.

"A-ashton, Ashton, make me st--stuuhhuhh--stop." Your sister pleads. It's not surprising that she figured out it's your doing thanks to the snapping, but even as she has the wherewithal to beg you for mercy she doesn't have the willpower to stop herself. "I-I'll--duhhoohhh--do anything...! Please just don't--muhhh--make me do this..!"