Internet game is good practice for normal night/day game in my opinion. Its like real life just easier; you can buy yourself time to reframe stuff, think of comebacks etc, theres no body language to worry about conveying...
If i were you, I would try and avoid facebook and get her msn or something, a lot of the time people have their msn addresses visible on their facebook profile so you can add them easily. if not, just say something like you dont really know how to use facebook, has she got msn or something instead
Its much easier to game people on msn in my opinion (whilst writing this I am actually running game on a girl on msn who I just #closed whilst on the phone running game on an HB8 who refused to hang up after I cubed her until I told her my battery was running out). I say this not to show off how solid my game is (i'm no Style), but rather to show how much easier it is to internet/phone game. I would totally recommend anyone doing it to train their routines, neg hits, and pretty much element of game.In your particular situation though mate, I strongly recommend getting her on msn and taking it from there. Generally I think its pretty easy to #close from an msn situation, you've had a lot more time to build up comfort and trust than you might have in the field or whatever and you probably wont have the same anxiety as you would normally have as you're disconnected from your target because its over the internet
Hope that helps bro
PS - if you do stick with the facebook approach, try kinoing her using Pokes
If you get her on msn and you're running C/F game, playful nudges often work well too