Sometimes it looks like one thing is causing a huge reaction, when it’s really just the last pebble to start the avalanche. (E.g., he didn’t wash the dishes, I’m getting a divorce.) Ballet is a tremendously difficult career, from the food policing to the hours to the wrecked feet and other injuries to the uncertainty of the next role. Friend may have been 75% out the door but willing to try one more time for that dream role. When that didn’t happen, I’m betting there was a huge weight off her shoulders to say, “I’m out.”