I have always found this to be true, nothing wrong with it, they are more emotional and touchy feely than men. If two women are friends and both have ended their relationship and the opportunity arises they will take it. If you have a threesome with a couple of women they will check each other out and maybe have a fumble, they are far more curious than men.
At one time women wouldn't admit to this or admit that they masturbated, but today's women are much more honest and open, and why shouldn't they be, it's harmless fun.