I attended a (mandatory) safeguarding refresher course - a whole day - recently.
Part of it involved looking at real-life sex offender cases and recognising traits, patterns, etc and the trainer gave us 3 examples of women. Yes, she'd managed to find 3.
But in each case, she pointed out that the women were acting on behalf of men, who also in each case were emotionally manipulating the women to abuse on behalf the men (e.g. Vanessa George, who took photos at the behest of a man she'd met online).
Finding cases of women who have acted independently and sexually abused young children is not easy though there, are, of course, some examples of women abusing teenagers.