No, it's not a just move.According to Pro Wrestling Sheet her contract was coming up BEFORE Slammiversary. So I'm not sure that this isn't just a move for the sake of not looking like their World Champion walked on them and to not get the Jeff Jarrett treatment by being taken advantage of.
She undoubtedly has some growing up to do but far more unprofessional people than her have made big it in wrestling(i.e. pretty much everyone).
They asked her for a promo video. Nothing risky about that. She refused. She got fired. 1000% fair.