They didn't want to fire her, but she did want to quit. She wasn't happy with the direction they were taking her character. I wouldn't be surprised if she also had issues with the same guy McFadden did. Jadzia was killed off because Berman wouldn't let Farrell switch to being a recurring rather than a regular, which may be what you're thinking of.
VindictiveJudge
joined 2 years ago
And a malfunction has the potential to destroy all life in the multiverse.
I didn't like that part at all. An infinite multiverse, which they state in DSC is the case, means that anything with a probability greater than zero is guaranteed. Mathematically, the multiverse should have already been wiped out at some point. It's also a throwaway line meant to increase dramatic tension for all of ten seconds before the scene ends, and an empty threat given that following through would end the show.
I suspect she never learned how to read faces or tell tones of voice apart, which is why has so many problems when her empathic powers are supressed. She can sense sarcasm through an opaque soundproof wall, so why would she need to know that people sound different when they're being sarcastic?
That was entirely dependent on Stewart's contract negotiations, though, rather than anyone wanting to kill off Picard.