What happens to people who are afraid of blood but also women?

I mean, periods are technically blood. And other gross things.

So...

Hypothetically, no woman over puberty is afraid of blood.

So...

What about people who would eat other people after smelling a few drops of blood?

I'm looking at you, Jasper. Has Bella Swan not reached puberty at nineteen? Though I understand why it would be gross due to... er... you know. But still. I don't get why you don't nom her at least once a month.

So.