A woman will write an entire article about the subject, with research and links, and a man will still ask her to explain it to him.
As I said, it may not be with any ill intent, but the point is that “females” and “girls” are terms that are used to describe women that configure us as somehow lesser than men, whether it be to reduce us to our bodies and sex or to infantilize and disempower us. This is why I also brought up the point of these terms being micro-aggressions; they are insidious ways that serve to take power away from women. Look at the history of the usage of the word “female” if you have any doubt. Or Google if women like to be called girls. Each woman of course has her personal preferences and I believe those should be honored.