I interned at a company last summer, and there was a girl in my department there for about a week, she showed interest in me, but I never made a move...because she left after a week (didn't like the job), and she had a BF.

I'm going back to continue my internship in that city, and I haven't talked to her in any form since then. She no longer has a BF like she did when we were working.

My question: How should I make myself "re-visible" on facebook to her, so that I'm on her radar?

Edit: I friended her after meeting her (last summer), but we haven't talked since.