In my opinion you are a wonderful Mommy. My mother had serious mental health issues, and neither got help for them nor gave me to someone who was capable of nurturing or even tolerating a child. And in the sixties, people just looked the other way. I was 28 years old, talking to my former 6th grade teacher before I was even aware that what took place in my home was child abuse! I knew I was miserable and afraid and unloved, but that was all I had ever known, so I accepted it as normal. Now here I am at 50 trying to put myself back together again.
You are doing two good things for your child, working on your own problems and seeing that she is taken care of while you can't do it yourself. If you had a physical disability no one would think twice about you being temporarily unable to care for her, but just because they can't see your current problems the way they could a cast on your leg or the results of chemo, doesn't mean they aren't just as real.
Thank you for doing for your daughter what my mother wouldn't do for me.