Sweet Dreams Slutty Step-Sister

I dont really know how wrong this is, but lately every time I see my little step-sister my dick gets HARD. I mean she isnt that little anymore, I actually heard her making noise in her room one night and of course I looked in, she was having some kind of intense sex dream. moaning, moving her hips. I me. I had to go jerk off like three times. But then I thought, maybe next time she is napping, I could help her have a REALLY good wet dream.