So this gurl is going to college?? Well my guess is that she is getting ready to leave, unless she is going to a school close to home, but if she is going a great distance anyway, give her sometime more then 3 days, she has to coop with leaving and get settled into her new place. If she is staying "in town" give it 3 - 5 days, if after that its best to move on. If you like her so much how come you didn't just ask her when you walked her out to her car. Was she going to come back to work there any time soon? Just my .02 cents.