What a weird comment.

If you want to talk about early mammals, can you name any mammalian species that eats meat where females don't also hunt?  Females of many species stow their pups in hidden dens so that they can leave them to hunt.  Packs of wolves that cooperate to take down large game include female wolves.  There's no reason to think that early hominoid females didn't participate in hunting either.  Compared to all of evolution, sexual division of labour in modern humans was a fairly recent innovation.