I'm mad at my gf not answering how many people she's slept with, plus some other info
What will you do if she doesn't tell you?
If she does not want to state the facts as they are, she could as well as keep her mouth shut.
If it's really personal and may bother her, there's no point in making her uncomfortable and your relationship tense when you try to keep demanding these things. It's toxic.
Fine. I have conceeded.
Yeah, she isn't digging up your past either. If you feel a bit insecure you could try couples therapy.