I can't imagine how awful she must have felt afterwards. I certainly wouldn't want to experience something like that - the actor's nightmare, indeed!
Good for her for doing what was necessary to move on, however roughly. As many have pointed out, the live theatre environment provides the kind of fascinating dynamics where things like this are possible, however rare. But without taking the risk, you never get the opportunity for lightening to strike. Usually, though, you don't want it to strike you dead
And for those who are being so harsh - are you overly young, inexperienced, both at the same time or just really brutish louts who take your bitterness out on the world around you?