All girls fap to an extent (or have fapped and were too young to know that's what was happening). Some less than others.**
In my experience, my friends that practice regular battery assistance enjoy sex less.
And it is true, when in a relationship, the lady needs to resolve things on her own a lot less often, provided the male knows what he's doing.
Also, girls are only in heat about 3 days a month. The rest of the month, fapping is out of boredom or to achieve a damper environment.
**religion and female circumcision may cause some women to not fap.