1) Make sure she really wants to do medical school. This is an AWESOME resource I use
www.studentdoctor.net. PLEASE show it to her. If someone would have shown it to me, perhaps I would be halfway through a Pharmacy degree instead of just taking the Pre-reqs for it.
2) Allow her good grades to help with the financing.
3) If she does get to Medical School, LOANS ARE OK. The burdon of the course load plus the financial aspect of it will drive her crazy. Let her pay for the loans once shes done. In the meantime, help her out by making her dinners, etc. Since she wont be able to work.
Suggest she works PT while going to school FT. It will make her much more marketable for colleges if she has healthcare experience. There are plenty of opportunities in local hospitals for phlebotomy and the like.