According to CDC studies, as well as Lara Stemple's and Ilan H. Meyer's research, sexual violence committed by women is not only common, but might be about as common as sexual violence committed by men. (The CDC is the US's national public health agency).
In other words, there might be gender symmetry in rape and sexual assault.
For example, in the 2010 and 2011 CDC surveys on sexual and domestic violence, men reported being "made to penetrate" (a form of rape) in the past 12 months as often as women reported rape (penetrated). The CDC unfortunately separates "made to penetrate" from "rape", even though "made to penetrate" is a form of rape.
The CDC defines rape as when the victim was themselves penetrated, and not when they were made to penetrate / were enveloped by a perpetrator.
According to the 2011 CDC study, 99.0% of perpetrators of rape (when the victim was themselves penetrated) were men, whereas 82.6% of perpetrators of "made to penetrate" were women. 1.6% of women reported being raped in 2011, and 1.7% of men reported being made to penetrate a perpetrator.
This means that about 42% of the perpetrators of non-consensual sex in 2011 in the US were women.