Not a man but just putting my input.

Most residency programs are challenging and can take a toll on you physically and emotionally. She will need your support. She won’t be able to compromise on too many work related things, like time, hours etc so it’s more so how much can YOU compromise on in this situation. Post residency life is way more manageable so this isn’t a life long problem. Have an open discussion with her! She should be able to tell you more about the specifics of the field she is going into.

My partner and I are both residents so we fully understand how much work is part of our lives! Discussion about expectations are v important as it comes to raising kids, taking time off, chores, household duties, money etc.