D22 is also interested in grad school in Europe. But ideally she wants to work a year or two in the US first. She has EU citizenship, so that would make things easier and allow her to work there after IF that’s what she wants to do.
I am a bit leery, because of job opportunities in the US afterwards. I think that’s the tricky part for those that want to return to the US. However, her field is public health/ epidemiology, so sitting out the next few years in Europe might not be a bad option, as the immediate future in that field in the US looks tricky.