Daughter is 30, paranoid schizophrenic, under county guardianship in state hospital. We cannot get any information about her. Any recourse?

Our daughter became paranoid schizophrenic about a year and a half ago. She became occasionally violent, completely delusional, and would totally freak out and then flee, into traffic, etc. We cannot take care of her, and be her conservators. We had her hospitalized locally off and on for a year, and then the county conserved her, and put her in a state hospital 2 hours away. She is convinced we were trying to poison her, and won't let us visit or get any medical information about her. We don't know if she is being raped, mistreated,dead, or what medical treatment she is getting. I was told by a psychiatrist that there was a possibility through the court that we could prove her incompetence of making these decisions, and possibly find out how she is doing. The conservator will tell us nothing. We have tried to send medical information and suggestions to the doctor at the hospital, but he won't even acknowledge that he received the letters. That is all we asked for.