Sending you more hugs for a job well done. You are proving to not only be a very loving warrior mom but a warrior grandma now as well.
by the way, I hope you will get some answers after they do the mental health assessment...could find out that Bipolar Disorder is behind so much of the ugly behavior, self hatred and self abuse.
I, myself, was awfully hard on my mother for many yrs...these days I try and at least eliviate "some" of her guilt (long story) by letting her know that my Bipolar Disorder made me a challenging child to begin with...She wasn't just a horrible mother, ya know. I would have made any parent look "bad".
I just wish our difficult child's weren't so good at biting the hand that feeds them so to speak. They are blessed. Your daughter and now grandson are blessed to have your intervention.
You deserve a good rest tonight.
Love,
LMS