I like the design of these forums, but the activity level kind of sucks. You had a perfectly reasonable question -- and you should've been able to get an answer from someone before now. Anyway, I'm not sure what's happened in your situation, as it's been several months now since you originally posted this, but here's my suggestion:
You need to do display some serious higher value! Make your Facebook page work for you, it's what it's there for. You need to have pictures of you doing lots of different things, skydiving, bungee jumping, at bars, at clubs, hanging out with friends, females, etc.
Then, when you "hit her up" on Facebook, curiosity will make her check out your page and see what you've been up to since you last saw each other. This should help to see that you're a different person than the one who was in the friend zone when last you spoke.
Make your intentions clear, although don't come right out and say what you want from her...Coming on too strong doesn't usually work as well, but if you're subtle and drop hints, she'll likely pick them up. Girls are usually good at picking up clues. If you just come right out and say what you want, that takes the fun out of it for her. She likes the drama, she likes the intrigue. Make that work for you. Drop innuendos rather than blunt talk. That's my suggestion. Hope you see this and it helps you out in some way.
Best of luck