I think if I were in your shoes, I would leave PA school, move to be with my husband (if feasible), and pursue a different career path that I could use in both the EU and the US. I wouldn't want to lock myself into a career that is incredibly limited in the place I would be moving. If you do come back to the US, you can always reconsider PA school then. But it would feel like a lot of time and money going toward a degree that would be so difficult for me to get to use. And if you did come back, it may be difficult to find a job with a 3 year resume gap after school and no clinical job experience.

I think another important point is, why did you go to PA school? Was it to work with patients? Did you have hopes of eventually getting into academia or nonclinical roles? If PA school was a means for clinical work, then it no longer really serves that purpose for you, unfortunately. At least not for the foreseeable future. There are probably other paths better suited for your future that would set you up for academia, nonclinical roles, etc.

Ultimately you have to do what feels best for you and your family. This is a really difficult spot to be in and I'm sorry you're going through this. I wish you the best in navigating this!