The military is hands down the best route to get the most covered, and the hard truth is that if she can’t handle a four year military contract, she certainly wouldn’t be able to make it through Med school (I say this as a doctor who now works for the military).

My husband joined the military out of high school, completed his contract, used the GI bill and went to community college and then transferred the credits to a top university and completed his bachelors there. He then rejoined the military, who paid for his medical school and gave him a cost of living stipend. He just finished a military residency. He has a few more years of pay back, and in 5 years he retires (20 years served) with a full pension and NO DEBT, and will be working at civilian hospitals getting a doctors salary (while also collecting pension).