<human>: Can you give me a shortened version of the text?

Relationship length: 2 months

Background: I was at her place and wanted to look up a song on youtube that she mentioned. I opened a new tab in Firefox, which then shows previews of sites you visit alot. The very first preview was a pro-anorexia website. I didn't ask her about it and thought nothing of it, but it got me thinking later that evening. She doesn't look anorexic nor do I have any other clues that she might have an eating disorder. I also haven't heard her say she thinks she's fat or anything like that (she's normal weight I guess). It still bothers me that she would look at a site like this though and I wonder if I should just ask why she would go to a website that enables a very serious disease. Obviously I really like her and I fear I may have invaded her privacy when I saw the website previews on Firefox, but I can't change that. 
She's studying to be a teacher, so there's even a chance it was for some school project about how to deal with kids that have anorexia maybe. But right now, I have no clue and it's bugging me alot.
Mind you we have been very open about our past so far and I hope she doesn't have something to hide.  

I'd love to hear you guy's perspective on this.
<bot>: Girlfriend went to a pro-anorexia website, I found out because of Firefox previews (1st in the list, most visited?).. What to do?