Should I wait or send a facebook request?

[Best]

Okay, so I got done with my major at the university, and I like this woman in the department she is like 28 may be and I would like to add her on facebook, but in few days I have to visit the department for the last time so should I send her a friend request now or after my visit?
I can't ask her for friendship in person because her disk is few feet from the other employ across from her and its really quite so its not good.

P.S. Also please tell me what should I put in a facebook message to her so she more than likely does not reject me thanks.

[Alex]

Just go for it. It's just like requesting someone in school... isn't it?

[Happy Girl 20]

I say go ahead and send her a friend request, the worst she can do is not accept your invitation.

[Resnick]

Send a request.