I have been following along ever since you arrived. I have not checked in as I have no experience in a sitch like your. My W BD me and kids after Tday supper, revealed her affair and BF, abdonded her kids, and moved in with OM all in the same evening.
Similar to Gordie, the house was W’s domain. She ran it for the last 29 years. I cook no where as good as W did, man what i’d give for one of her dinners again. Sigh. Actually I don’t do any of the thing she did as well as she did.
However, don’t you worry about comparing your efforts to her past accomplishments. You just do the best you can, learn from it, and ignore the criticism. Do it your own way. If she ever does offer something constructive or helpful, pick up on it, thank her, and do it. I am not sure how often that may happen but I suspect it will be seldom.
I do feel for you having to interact daily with the selfish and teenage version of your W. Stay strong, find your center, and remain detached (I’m working on that too).
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.