>"Every study on violence is males on females."
No, I believe you are mistaken. There are many DV studies, for example, that measure violence in all directions: M-M, F-F, M-F, F-M. IPV studies show that about ½ are mutual combat, and about ¼ are female-to-male, the remaining ¼ are male-to-female. The studies are there if you look for them.
Also, you mention that female violence is increasing. Again, I believe you are mistaken. Reports of violent females are increasing, but we cannot conclude that women are becoming more violent; merely less hidden.
In cases not involving DV (school yard fighting, for example), then yes perhaps there is a genuine increase.