Most Helpful Girl
Hmm, that's tough. Seeing each other will probably make things a lot harder for you. Either way, I don't see how it could end well. She could 1) reveal she still has feelings for you as well (and then she leaves?); or 2) not want to meet at all; or 3) meet you and you find out she has no feelings. Either way, not very good options.
That being said, you should live life with no regrets. If you think you'll really regret not saying goodbye, then you should go for it. But I don't think you should stir up old feelings for a girl you "like a lot".