Should I and if so how can I approach a girl I met and now found on facebook?

So I went to an interview for a University course and ended up sitting next to a very friendly, funny, quirky and attractive girl. We got on really well chatting throughout all the breaks. She showed me to the train station for me to get home and we parted ways. Since then I've been thinking about her and how maybe I missed an opportunity. I remembered her name and found her on facebook, but it's been 2 months now so I'm not sure if I should just accept and move on or consider doing something about it?? I don't really have anything to say as I know she's going to a certain University, not the one we met at, and it seems somewhat belated to wish her good luck as she had got all her offers? Not sure what to do as I feel I may just be bigging her up in my mind as this wonderful person despite the fact I only knew her for 5 hours??? Should I say hello or just put it down as one of those things??? :S

Put the internet to work for you. via Personal Recipe 2629979