She was absolutely fired, her boss even admitted as much (paraphrasing, "we accept your resignation but can't agree to your timeline, termination is effective immediately"). TBH, given the behaviour (public email saying "stop working on what mgmt asks you to, it doesn't really matter!" and email to manager saying "do X,Y or I'll quit!") - the way this was handled is not discriminatory, it's what would happen to 99% of the employees. She was a star employee and thought it can't happen to her, but apparently she overstepped some boundaries.