Hi Terry
Because none of us know you or your friend, you're probably the best judge...it would depend on how well you know her for example.
I'm not a big fan of FB for important communication, but if you feel you need help and she's really your only option, then I guess all you can do is ask for advice.
I'd probably wait til I was sober, but if you feel you'll chicken out then...again, it's really your call.
I guess if you do, and she's uncomfortable with it, she might be able to suggest one of her male friends you can talk to
D