The first time my eyes were opened to her shite parenting was when Edie was Wilbys age and she was throwing a strop because she was being asked to have a shower but didn't want to come away from her ipad, and she was bargaining with R, suggesting R took the ipad into the shower for her and held it for her to watch while she showered. To be honest, E was being a brat, and R found it hilarious and filmed it for content. Es attitude and the way she spoke was exactly the same as W is now.
And let's not forget E having to open her siblings birthday presents, else she'd kick off.
This is the sort of behaviour W is displaying- it's a lack of parenting, nothing to do with anything else.
R is clearly terrified of him kicking off though- I think with the others they could be bribed with stuff to calm down, I don't think W can, which is why she's scared.