I'm going to go against the grain here, and say forget about her. I mean, what exactly are you going to accomplish by sending her an email? It's a bit hard to build a relationship when you two aren't geographically close, and there had been no real special bond from the past. I know this sucks and isn't what you wanted to hear, but I've had experience with a very closely related situation. It sucked. A LOT. Don't let it drive you insane. Go chase. That's the single greatest piece of advice I can offer.

By the way, I think I've been using Excel too much. The title reminded me of =sum(x,x) :P.