She is unpleasant because she left abruptly without giving any explanation, at least to the public, some of whom would be fans. She is a professionally trained dancer so she knew dancers do not indulge in all the lovey-dovey -ness she seemed to expect; there simply isn't time. After several weeks she began releasing snippets of innuendo, then when the show was over and everyone dispersed she made allegations, which just happened to coincide with the opening of a play in which she was appearing.
It seems to have been a clash of personalities. It happens, but usually without the attempt at wrecking someone's career and taking out a popular show.