Doesn’t sound that way to me.
“news-side employees have grown frustrated during a period when its opinion hosts have largely used their programs to lend support to President Donald Trump and his administration, sometimes criticizing news reports.”
Depends - if Fox is forcing a particular leftist viewpoint on the news staff (and Fox is now) she might harken to a place that she feels would let her work independently.
She was there all through the “conservative bias” from the beginning - why would she suddenly feel the need to leave because... Trump?