There's about as much chance of Banks leaving WWE as there is Orton leaving WWE.
I dunno. She has been treated like shit ever since she moved up to the main roster. All she ever does is put people over and give Charlotte more title reigns. She owes them nothing.
I have doubts that TK cares about women's wrestling enough to allocate the portion of talent budget she'd no doubt require to sign, but I wouldn't presume she is a WWE lifer.