If I try and put myself in his situation regarding just Arthur and no ET, I could see a 6 year old refusing food and acting out. Arthur had just lost his mum, under circumstances that are not the norm. I would be thinking “this is a reaction to what has happened.” I would then get him to the gp, push for referrals to CAMHs, nutritionist, occupational therapy etc… I think TH almost looked to ET for parenting advice? He took her thinking chair and implemented it, he listened and believed her that Arthur was a problem, he relied on her feeding Arthur. If she said it was just Arthur being a “brat” he believed her and her “knowledge”.