She needs to stop pretending this is about being tidy and not liking the clutter. The house is always a tit tip because she's too lazy to tidy and always cluttered with constantly buying things for herself. We all know she's incapable of even shutting a drawer properly. This is just her being a complete Grinch because she's had to think about other people and begrudges having to buy for them, even if they are her own children. Because she's not feeling it, no one else can.
If only she'd have done her own challenge she'd have been thriving!