mental illness is unbearable to watch in your loved ones, schizophrenia especially.
my father was bi-polar and my cousins and aunt are schizophrenic, and I feel your pain.
When I was in college I had to institutionalise my father cause his wife could not bring herself to do it. I am so happy for you that you found the courage to go through this without a drink.
I don't know if you have read MIRRecovery's posts about dealing with his daughter's death sober, but that are amazing and have given me strength to know that anything is possible.
Dee might know the link and they are definitely worth reading.
Hang in there, you are doing amazing.