Hi. I don't really know if you're a pedophile or not, but I think no, you're not. And you seem to be quite upset by what's going through your mind and how your sister might be feeling as well, and all I can say is, I think you're a good person. I think if your sister hasn't expressed any distress or discomfort about you then you can assume she is okay. As long as you have the love for your sister, that's the main thing. I think you're asking yourself the right questions regarding these things too, and maybe some kind of counseling or therapy could help you put this in it's proper place? or you could keep reaching out for feedback as well.