You touched on it a bit but I wanted to expand upon this:
It's basically 7 years of hell on everyone. Then 4 years of more hell trying to dig out of debt. 6 years of playing catchup on savings games to bump retirement . Then when we finally hit 50 it'll be pretty damn nice.
if she does this you'll be playing
catch-up until you're
50. That's with nothing unexpected. Once you hit 50 you will be caught-up, nothing more, not ahead of the game.
Think about retirement.
Based on what she currently makes and an assumption that you make a decent salary you could be looking to retire together when you're 50. If she goes back to school there is zero chance of that happening.
When you hit 50 you will be caught-up, nothing more. You could retire together then, but you won't. There are a few reasons:
1) Keeping up with the Jonses. Doctors have different social circles with different socioeconomic expectations. When she starts making $350k/yr your household expenses will skyrocket. This means that you won't actually be caught up at 50.
2) Even if you don't get sucked into that cycle the money will stop her from retiring. If you hit 50 and she's making $350k and you just got caught up with the expenses of school, do you really think she'll retire to part-time work? No, you're going to want to take advantage of that earning power. If she retires to part time work she'll be making $120-175k per year (estimated).
That's what she'd have been making if she didn't go back to school. Yes, $175k part time is better than $175k full time but $175k part time is worse than full-time retirement, which is where you'd be without the school.
3) 7 years of school. 10 years of work. 17 years for the career change. Do you think that she will put herself, you, and the family through that type of social and financial hell for 10 years of work? Hell no! Doctors can pretty much work until they die. If she goes back to med school expect her to work well past when she would have retired in order to make it "worth it".
This doesn't even account for the fact that she could go through all of that and
still hate the job. She liked pharmacy when she started and now she doesn't, so there's already a history of "poor decision making". What's that, she doesn't like pharmacy because of the people? Well, if she believes the grass is greener in doctorworld, she's deluded. Doctors are type-A, perfectionists. You know who manages doctors? Other doctors. You know who make terrible managers? Type-A perfectionists.
Look, I get the whole mid-life crisis thing and needing a change: my wife just went through that earlier this year when she became self-employed. However, there is a fungible line whereby mid-life crises become selfish and dangerous and, from how I've understood it, this scenario is well over that line.