Unacceptable to her. Fine, she is entitled to that opinion. She is not entitled to everybody sharing that opinion. If there is no common ground, the involved parties should part ways. Which she expressed. And the other side followed through. Which she now is upset about.

If she really wanted to achieve change within the system she'd have needed to not express it this way. There are people on both sides of the table. One can talk to people and find common ground. But that is rare to work if you start with a threat.