I think KP is an absolute car crash (& seems to enjoy being one), I think she has made a mess of her looks & her teeth are beyond ridiculous...however.... I can't fault her when it comes to Harvey, none of us are close enough to confirm how good or bad she really is with him but I honestly don't know how well I'd have coped having a child with Harvey's complications let alone at Katie's age at the time.
My biggest gripe with her is the way she publicly badmouths everyone she has a slight falling out with. That's in bad taste imo.