Leaving the misogynist language issue by the wayside, I wanted to address this point, because a couple people have said something to this effect:
Still it was pretty stupid to have let a degenerate into her house.
They don't wear signs for crissakes. That's the whole problem. Predators are usually pretty practiced at blending with society. Criticizing someone for getting fooled by one is literal victim-blaming, and it's really, really shitty.
The measure of her qualities as a parent isn't her ability to magically sense pedophiles, it's how she responds when she finds out about one, and she absolutely reacted accordingly.