possibly finding a part time nursing job if that turns out to be at all feasible, because I really love working as a nurse

I strongly suggest that.

I'm not a nurse so I don't really know, but I have trouble imagining scenarios where a nurse who is agenty enough to be an executive assistant doesn't end up making a big difference as a nurse, at least locally, to a lot of people. Passion confers abilities, and ripple effects of small improvements in hands-on fields should not be underestimated.