My heart goes out to you.

I hope you do not blame yourself for your daughter's condition and can see the depths of what your mother said to you as just a lie in an attempt to hurt you (and control you by extension). Having kids gives us a terrible time emotionally sometimes, especially when they are hurting and there isn't anything we can do.

Feeling depressed at the same time as the world truly is dumping on you, in both circumstance and acutely can leave you bereft of hope. Hang in there. You've come to a good place.