For your wife - if she's a floor nurse, that's often union, and management almost never is. That should figure into her decision some.
I personally shut down talk of management early and often because I've almost always been remote, and it's a rare company in my field where management can be remote. Also, I can't stand the thought of having my time spent doing .... managing. With what I do, I can "slack" and get enough done in my own amount of time that I can live my life too; management tends to be on other peoples' schedules and can't be nearly as "flexible" as I am.
Never heard of Union nurses? She's what's called here, a CNC, Clinical Nursing Coordinator, fancy word for a charge nurse, but she nearly always has her own patients, as well as keeping track of/assisting other nurses. The next step up is Far less patient care (but you still have to when folks don't show up), far more scheduling, meetings, ect. She doesn't mind the training new people side of it, and I think she actually enjoys having a window into the big wigs decision (although generally without a say).
In my role, being technically a supervisor over 1 guy, really just approve his time sheet, do his reviews, ect, I get the management emails. That is sometimes annoying, but you see another side too. All of the sudden you see how raises are calculated, based on "comp ration", stuff that most people don't actually see.
As for feeling chained down; My company is kinda service provider (engineering), and kinda leases it's employees to government offices... (we are either prostitutes or mercenaries?) but the office I've been sold too for 8 years, does happen occasionally have inmates... Anyways first day being in the office for 10 hours, no joke, I'm looking out the window, and noticed, that barb-wire points both directions... IE, it's kinda feels like a prison; but yes that barb wire on top of the fence Does have 3 rows to keep people out, and 3 rows inside to keep people in....