You do judge someone who was raped. You judge yourself.
It's strange that you think that anyone who says "I don't blame women for being raped, I blame the rapist, but I think minimising risk is important" must be lying, but that you can actually blame someone for being raped, but when you claim not to blame others, you're telling the truth...? I don't think that's fair.
I think you've obviously still got a lot to work through, and should be kinder to your 15-year-old self. This thread seems to be hitting a nerve for you, which I can totally understand, but I don't think there's generally the blame you think there is. There are a few comments that do that, but the vast majority emphasise risk reduction and safety without blame.
And that woman is being blamed for exposing her child to a potential (and actual) danger, not for being raped herself, as per the last comment I read on the matter. When a child is at risk, then yes, the standards that the person (who is responsible for the child) are held to are higher, as they should be. Still, I don't think she is to blame. I do think her child might blame her, though.