YOu are so wrong about her attitude. Yes she had a LV, but they didn't show a whole closet full. at least from what I remember and I have watched it several times. Also so what if she did, they were making fantastic money and she was working also. It is no ones business what they spend their money on. And really, no one would want quints. Come on. Way too much money and way too many babies to care for. Even Kate said the night they found out about the sextuplets was the worst night of their life.
Also, Casey has said REPEATEDLY, that she doesn't care where they live or what type of house they live in, as long as they are together. Doesn't sound like a bad person to me.
They were making big money before the quints, so what if they spent money on things. They have downsized, and it is obvious that they love those kids.