Single women already vote dem by like 50 points regardless, married women vote republican by 5-10 points and aren't changing their minds over abortion. Plus, there is some chance that she'll eventually be asked if she thinks abortion is a women's issue or if she thinks men can get pregnant, and she won't know how to answer it.
Harris might get a temporary convention bump nationally of a point or 2, and I'm not even sure about that, and then her support will gradually decline the more people see of her, just like it did the last time she tried to run for president. If she's not winning these states now, I doubt she's going to. They don't really have much more they can throw at Trump that could damage him, and almost everything that could come out about Harris will damage her. I think if Trump were comfortably ahead right now, there would almost certainly be another security "whoopsie" before the election.