A hot girl who liked me from school is on facebook but there's no way to talk to her

There was this one girl in high school that used to like me. I never really gave her a lot of attention because there were hotter girls in my class, however I've recently found her on facebook, and man, she's smoking hot now.

She used to call me, stare at me, etc in high school, however that was 5-6 years ago, so I'm not sure how she would react to being contacted by me now.

Add to this the fact that she's disabled people adding her or sending her messages. So if I wanted to contact her, the only way would be to contact one of her friends and request them to tell her to add me.. I'm not sure how that would go and if that would be creepy.

Any ideas? Or is there any way I can alert her to my presence without contacting one of her friends