Would Anita in her right mind act like this? Think her boys were out to blame her, hurt her, for what Bellatrix did?
No.
But is Anita in her right mind at the moment?
No.

I agree with you, and we've already seen that prolonged exposure to the Cruciatus curse can leave you broken, insane. Poor Neville's parents :(... Maybe Harry could bring them up at a later date? (though I guess he'd find it difficult to talk about that scene in St Mungo's to strangers)