In a word, yes, since she is a political appointee.
But she sued the last time an attempt was made to get rid of her and won.
One would think that a person with morals and ethics would submit a resignation, and allow the president to decide on whether or not to accept it, but then, I suspect she has neither.
What grounds did she sue on, and win? Could the Secretary of State sue to keep her job? That seems strange.