Lots of women? got any figures?
Unless martial arts are practised to a high level, they are next to useless & in a domestic setting with little room, its easy for man to use his size and physical strength to overpower a female regardless of her KB skills.... which of course, as you well know, the vast majority of women do not have.
I know one female who did kick boxing, it didn't stop her partner trying to drown her in a bath or smashing an object into her face.
Ironically, after she eventually left him, he told everyone it was her who used her kick boxing on him! and many esp women believed him!! such is the charm of the domestic abuser.
They don't hit you on the first date! its a slow manipulation, isolate you, make you doubt yourself, belittle you, make you dependent on them, often financially... then it starts & most have no where to turn.