@Joebro13243,
Yeah, if you guys friends from school then that be easier to talk to each others.
Just ask her, those 5 years you didn't see her, what she doing in regarding school. Has she finish college, she working on Master? Is she working now, or still in school?
Then remind her the times back in the days when you guys have classes together. Mentioning your old school, see if she went back to visit the high school alumni, etc...
You know, things like that, pretty much catch up on what she doing in the 5 years you didn't see each others.