Not necessarily, since we don't know what the Brexit deal will be or even precisely what she intends to negotiate for. When it finally comes to voting for or against whatever deal is on the table, I think it will be more a case of each MP voting according to personal preference rather than adhering to any specific party policy.
Having said that, I agree that by this time, Teresa May will be but a fading memory.
When she took over from David Cameron she gave the impression of a Thatcher-like no-nonesense iron lady. However it has only taken a short time to for her to be exposed as a woman who is all rhetoric and no substance. And, regrettably, a blatant liar.
BTW I don't vote because I don't want to endorse a system that I think is flawed and lends itself to unethical practice. Nevertheless I do take an interest. I have no political allegiance, but I hate bullshit and duplicity.