Mother cats whit youngs will kill any kittin that's not hers, that's why you should not touch the youngs of a cat that doesn't know you. If she smells a strange sent stronger than hers she'll kill it. Not all cats do this but it's a risk.
Fact some animals do "rape" but still it's different, males will choose a female and try to do it, the female will resist, because she wants to test if the male is good material. but far from the rape we know.
