Feeling a bit sorry for her, you pick her up and cradle her in your arms, gently talking to her "There, there, it's okay." she slowly stops crying and looks up at you, she now sees you and realizes you hold all the cards now. Seeing she has no other choice this far in the game, she just falls asleep in your arms. "Heh, now you see how good it feels not to resist? Now for a little fun with 'Mom' and Dad..."
Like a lion in wait for a careless antelope, you wait for your mom to come home from God only knows where and your father to come home from work. When they finally do both come home, like a sniper, you take aim at them and zap the two a few times, first turning them into two rats, then into the opposite genders, then into children, all the while looking at each other in pure shock and fear.
They, just like your sister, are at your mercy....