Something that’s worth considering is that UK medical training is sort of all geared up
for working in the NHS and all takes place in the NHS. So whilst it’s perfectly possible to leave afterwards (and plenty of people do), you do have to spend quite a lot of time learning and working in that system. If she’s dead set against it then that might be quite hard to stay motivated etc when it’s just not what she wants to do. It’s also going to be difficult for her to get a good idea of whether she’s actually going to enjoy doing the job as it’s going to be difficult to get work experience outside NHS work.
I agree with a PP that the US is almost certainly no better than the UK in terms of being a junior doctor, it’s very possibly worse and if maternity rights are a consideration then it definitely is.
It’s important to remember that wherever she ends up working, at the end of the day it is a job. Medicine attracts highly intelligent focussed people, who are often interested in what the career brings to them (which is reasonable) and where they want to be at the end of it. But it’s still a job, there’s still drudgery, you still do stuff you don’t need years of training for, there’s service provision, you need flexibility, you’re there to do a job, it’s not an interesting hobby or academic pursuit, you’ve been trained to provide a service. It’s weirdly something a lot of medics haven’t really thought of until they’re re writing drug charts at 4am. It’s a source of significant dissatisfaction for quite a few doctors especially in the early years.
I’d also encourage your daughter, if she has questions, to try to do some research herself in finding the answers. There’s a wealth of information on websites and forums and in finding the answers she’s likely to come across a lot more useful information to help inform her decision.
Good luck to her in whatever she decides to do.