How often do girls fap on average?

This subject came up when I was talking with this girl.  I told her like 4 or 5 times a month (I'm serious, I don't really fap that much) but she doesn't believe me as she says even she faps more than that.  Any somewhat credible statistics on how much females fap?

girls don't 'fap' but yes they masterbate, lol.

and honestly it goes by the individual girl, some honestly don't like doing it that often, and other will go non stop for hours on a constant basis.