You're out of your mind if you're thinking about giving her a hand written letter.
She already thinks you're creeper status because you came on too strong... if you do that she's going to upgrade you to stalker status.
You're smittened that's all... it's happened to me before. Meet someone you connect with more than on a physical level, but that other person's mindframe isn't in the same place as yours is currently... as in you want a relationship and she doesn't.
I think you should keep it moving seeing as she passed you twice already and haven't said anything to you... and she deleted you from FaceBook took... learn to take a hint man... she doesn't want anything to do with you... if she did she wouldn't have ignored you and deleted you from FaceBook. She would be showing interest too if she wanted to have something to do with you.
Hand written letter
|I out of your damn mind bro... hand written letter is for **** like your serious girlfriend when you messed up and you're trying to win her back if she was a good decent chick and you want to waste it on some chick you met at bar and boinked on the same night
you live and you learn Snake... that's all I can tell you and I hope you take my advice over everyone else's in this thread.
Now...
If you absolutely like this girl a lot like that and want something more seriously then give it some time and then try to strike something back up, but don't be like how you were the first time.
If you see her out and about on campus approach her on some hanging up and hooking back up, but not no relationship steez until she's ready to go to that next level.
Just give it some time before you try to strike something back up though... even a text asking if she wants to hang out and have some drinks and if she accepts don't question her actions about why she cut you off talk about school or other things that might peek her interest... do not linger on the past and what happened just accept it and go from there... don't even mention the fall out... only think you should mention from the past between the two of you is the great sex you guys had after you two are liquored up real good. Then you make yourself less needy and make her be all strung out for you like you are for her now.
But... if she continues to ignore you or doesn't accept your invitation next time then keep it moving from there on out.
You in Grad School man...
you should know better.