Should I pm this girl on facebook about cutting?

[AprilShowersBringMayFlowers]

i asked this girl on ask.fm if she used to cut on ANON, only because i heard someone say she used to. this is pretty much true though. I used to cut and i can relate to that, and i told her that.
she said i should just personal message her, and i'm not sure i should.
i mean if she used to she probably won't judge me for the fact i used to, but we're in different social groups completely. Our clique at school is fairly sized but she's really popular and is part of the pot-smoker crew...i don't know her well at all. so i don't know what to do. i kind of what to but feel like i might just chicken out because she'll be like "oh look at this ugly unpopular girl".
so should i or not?