Wife is like this. She gets run ragged at work for 50+ hours per week because they’re so busy. But she’s so instrumental in keeping the place running, that she can’t get away. People call her when she’s off, away on trips, late at night as she manages a 24 hr trades shop with emergency overtime callouts (necessary in her field). She never wants to take time off because the work just piles up when she’s gone. It’s sad to watch and I can’t help other than picking up the slack at home, but the money is so good she can’t leave. She’s caught in a trap but she’s compensated in every way to make the trap comfortable.