Well, the way I se it is that right now , u haven't build enough comfort, but she looked you up, which means she's interested. I personally dont like to use facebook or any other non direct mail thingy, cause u dont know when she will look there.
How about texting her with something like
Hey sweetie, saw u looked me up on Facebook, thinking of me much?

- Sawyer (sign ur name first mess)
Chances are shes gonna say something like:
how are u, or what are you doing SPAM, in her responce.
If she asks somethink completly dull, then dont even bother to answer that question. come up with something better.
Answer with something unusual:
Just saw the sunset over the bay, the sky's glowing orange - looks incredible
or
Watching two birds soar around eachother in the sunset, really sweet =)
etc.
the idea is to make her get that beutiful or funny pic in her head(she gets a good feeling thinking about it), and then she wanna know more. Make 1-2 more messages about what u see. Or a question that arose while u saw this beutiful thing. But make it more of a thought to urself that u accidently wrote down rather then a direct question to her.
Then u move on with trying to place u and her in that pic aswell, so that she associates this good feeling with u and her being together.
a really good end that Sean in PU1o1 talked about is to mess"Good night, sweet dreams, beautiful" but in another language. Like french or spanish.
Just make sure to use smilys(dont overuse them), keep it short, and stay flirty. Also a good reminder is to never use to many questions, atleast if they arent playful. (avoid logical questions) for example - How are you -triggers the dull responce - Im fine thanks, how are you? u can get the information playfully if u have to ask it.
Thoughts?
Edit: mess(text) her at like 10. Then shes usually home from work. If shes out with her friends, she hasn't gone to a big and noisy club yet but she's probably at some calm bar just having a drink. If she is just home, all the better. Either way u should get a responce fairly quick.