What a rotten week, but good on you for standing up for yourself and not taking the abuse. Quitting an abusive job is an empowering step; I've done it too. I wonder how long that "supervisor" has been in that position. Here in CA we have laws against that kind of abuse. I hope you told her supervisor on the exit interview - did they even give you one?

Be gentle with yourself. Prayers and hugs going out your way that the whole family is feeling better soon.