Yes, they do.
Animals often kill their young. Sometimes they eat them. They don't know any better. They are animals.
She was, allegedly, a human. She was suppose to know better. That is the point. If she does not and her actions seem to show that she does not, then she is not safe to allow out without a muzzle and leash.
That said, yes, being "human, should distinguish one, by 'Will'; moral choices discerned, made, committed to....which brings one back to these those who appear to abandon any such viable, wise and moral options; and who have not as well, any 'what are" reasonable, 'primitive' excuses either. . .
Words do fail, when one is reduced to insulting animals when we are left to ascribe animal qualities to a human being's, worst inclinations.