I worked at a VA Hospital right out of nursing school. I loved caring for Veterans. (And as in the latest article, I considered it a privilege.) My father was a WWII Veteran and was active in the VA, DAV, etc. He'd even been a patient at the hospital where I worked. Additionally, my son is considering military service when he graduates from college, so we've looked at a lot of information and talked to a lot of people. (ROTC would've been an option for him but he chose to play an NCAA sport instead.) Everyone says to get everything in writing if you have certain things you want to do.
Just throwing this out there for consideration. Becoming a doctor is a long, complicated process even without being in the military. It's four years of college, then four years of medical school, then three years of residency and often an additional year for a fellowship. Twelve years. The hours are long and the work is really difficult. Burn out rate is high. And it doesn't come cheaply. Most are saddled with loans; in this case there may be no loans, but there is a big commitment to service time.
I had a friend in nursing school who went through one of the VA Scholarship programs to pay for nursing school. She was a single mom and she saw no other way to pay for it. In exchange for four years of paid tuition, she had to commit to four years of working at a VA hospital; we worked together. Sounds easy, right? Not even really in the military. Well, for her, it wasn't. She wound up with a nervous breakdown because it wasn't a good fit for her at all, and she couldn't get out of it. (Well, I think maybe she could've, but she would've owed a lot of money that she didn't have.) I understood how she felt because I myself had to leave the job after a year, unfortunatley, because there wasn't enough help. (Very long story but that's all I'll say about that here.) Point being that these types of commitments can't be taken lightly. Being obligated changes the dynamic from something you want to do to something you have to do.
See if your daughter is interested in becoming a nurse. Nurses and doctors are in the same environment and get to experience a lot of the same things, albeit from a different focus, but as a team working together. It is a rewarding career in itself, and is easier to achieve. (Not easy, perse, but easier than becoming a doctor.) Nurses serving in the military or working at the VA I believe have to have a BSN, so four years of school. (And she could go higher if she wanted to.) She could still do any of the things mentioned here in this thread - ROTC, joining after graduation as an officer, doing the VA scholarship (link below) or even joining the Reserves. I have a nurse friend in the Navy Reserves (actually I know a lot) and it can be a lot of fun. The nurses work their shifts every third weekend (and I think two or three weeks in the summer) on a naval base in a great area and after work they head out together for a night on the town. The Navy paid off some of her school loans as she joined several years after graduating college.
Feel free to PM me if your DD wants any information about nursing as a career. My DD is in nursing school now so even though it's been a long time out for me, I'm seeing what today's nurses' training requires. (And I'm impressed!) The biggest thing to understand about nurses, and this has always been true thoughout my career too, is that nurses aren't just "handmaidens to doctors" (as still seems to be portrayed sometimes on TV); nurses have their own body of knowledge, their own body of research and have their own focus to patient care. Nurses are educated and licensed to treat a person's response to their illness, and that in itself can be quite challenging and rewarding. Nurses also generally work a set work schedule with a finite number of hours and so are able to have a good amount of time to have a life outside of their work.
Here is the link for the VA Scholarship:
https://www.vacareers.va.gov/why-choose-va/education-support.asp