Or if I'll even see her again cause I saw her at the university but it was a day when there were people from a bunch of different courses!
If you're looking for ways to find her again, you need to tell more about the situation you saw her.
Like closed room situation for specific courses from that one university, or more like a 'day of open door'-event with random people coming in and out.
With todays technology it might be possible to track someone down with such information.