once a week.... maybe. Only if I haven't had sex a lot in that week though. But back in my single days it was a solid once a week.
Im almost always hanging out with my bf, so we have sex 99% of the time, and then Im running around to school or work, so not alot of time to please myself...nor much need to seeing as my bf keeps me very satisfied But I can rarely resist having a little fun in my shower when I have a few extra minutes...so maybe every other day or so
of course i'm not serious. the vagina closes long before women are old enough to know about masturbating.
Usually at least once a day. But more if I can. I especially love lazy vacation days when nobody else is around, and I've got all the time I need...