1) We don't know what her demands were. Perhaps they were unreasonable. 2) She sent them right after an email blast that apparently rubbed execs the wrong way.

1) We don't know what her demands were. Perhaps they were unreasonable. 2) She sent them right after an email blast that apparently rubbed execs the wrong way. 3) Then she threatened to leave and they called her bluff. If I was a manager and an otherwise well-respected BUT irate employee who made unreasonable demands threatened to leave right after sending out a controversial email blast, I think I'd let them leave, as well. Negativity doesn't produce positive solutions.