She is trying to illicit an emotional response from you. Why? Because if this disagreement turns into an emotional sh1t show, you are playing on her home field. It's like a catcher talking sh1t to a batter... all the catcher has to do is catch the freaking ball thrown right at him... knowing the pitch type and exactly where it is expected. The batter... well he has to accurately time contact between two round surfaces, with no real idea of what he is about to see coming across the plate. If the batter loses focus, he is at a serious disadvantage with absence of emotional self-control.
I'm watching a news story right now with Jonathan Major's recent conviction of 3rd degree assault against his ex-gf. That woman is a mess, and Major's lost emotional self-control... handing her all the ammunition she needed to take him down.... and now she is a MeToo heroine, and can look forward to a nice career in Hollywood.
You can make all this stop by just giving her everything she wants.... do that and you will not hear from her again. I'm NOT saying do this, just illustrating a point. Now here is the bad news... if you fight her and win... this sh1t isn't over... you two have a kid together she will keep doing these little emotional mind games until she latches on to some other sucker... but even then you can expect minor emotional food fights until your kid reaches adulthood... and even then... it only gets a little better, then there is grandchildren... and that sh1t starts all over again.
All though this you cannot lose emotional self-control, because as soon as you do, she has you.