To be honest I don’t think she should have been.

When I was part of a group of frequent passengers advising another airline, I once got a chance to participate in some of the crews exercises which notably involve simulations of accidents complete with smoke in the cabin, instable plane and having to operate emergency exits. I still think that most passengers - including most extremely frequent passengers - grossly underestimate how it feels, hw heavy the doors are and how clunky the whole thing can be. With due respect for the crew who took that decision, I think that if they really believe someone could do that when recovering from a broken thumb, they really should be send back to training urgently and probably shouldn’t have qualified in the first place.