emmzzee's got it right. There are around 40 Christian groups at the local university where I'm from, so if one group doesn't seem like a good fit, there's probably another to try. The number will vary of course, and there are colleges with very few Christians, but they can always get together through Facebook if they can't be found through more traditional methods. Also, I was involved with Christian Challenge (another good group) and while there were only "official" chapters at two local colleges, we had members who went to a couple other smaller schools in the area. There WILL be Christians in the area where she will be attending school, this isn't a persecuted country. She's just got to find them. In addition to Facebook, there are fairs for student organizations, flyers, the Student Life office, etc.
And about apologetics - it's very important. A good campus ministry will put her in touch with leaders who know answers and resources for answers to the many challenging questions she'll run into. Books, too. The first couple of chapters for "Case For Christ" demolished a handful of arguments I had previously found intimidating. I actually like that better than "Case For Faith," though that is another good read. If she's armed with answers, she won't be intimidated into leaving the faith, at least from an intellectual standpoint. And if she's with a good student ministry, she won't be tempted into leaving it from the fun standpoint.