What is wrong with my girlfriend?

Does she have some sort of domination or submission ? I was nosey and examined her internet cookies. I was surprised to notice that she has watched a lot of videos of women hypnotizing and controlling other women and telling them what to do. There wasn't really any nudity or but it seems kind of adult-oriented and weird to me. It was like she was watching ordinary scenes out of movies, tv shows, and even cartoons!!!! with woman hypnotise woman. Because I always thought she was straight, but now this has me worried. Might she be curious? or a ist? or something else? any thoughts? Please, I need details; I am really struggling with this. It has got me confused because I thought I knew her so well.