It does seem in the last few years that more and more women are involved in the more violent types of criminal conduct.  In the 'olden days' violence by women seemed to be mostly in reaction to wife beating type scenarios.  

Now, no one is surprised by armed robberies, beatings, knifings, and this sort of conduct by women.

They are being convicted of sex abuse regarding minors as well.  Their punishment is almost always less, but the convictions are increasing.