What about looking her up in the phone book? Or how about going to your old School's website, and doing an alumni search? Call her directly, and she how life's been since you left your alma mater. If anything, you might be gaining a new friend. Who knows, maybe she is a Benz fan too!
Which brings up this thought: Why don't they have a spot for a Car Compatability match? Or maybe a spot where they can check wether they work on their own car or not? ...just pondering, that's all.