Could be my ex SIL.
She used to tell me how everything I did was wrong, I was a crap parent because of age limits in books that either me or my children didn't adhere to, I fed them the wrong things, dis the wrong activities, wasn't strict enough. ...
Then one day I asked her to show me how it was done, an hour later she was begging me to take over and after that she stopped trying to tell me what to do.
I miss her so much, I was gutted when my brother dumped her 