The conservator is filing motion to have exclusive POA over mom's health, is that ok?

My mom have dementia and resides in a care home. Recently, in Nov. of '15 she was transferred from my sister as a POA to a conservatorship after my sister put her in a care home in June '15. That was a board and care home which really just lets her sit around by herself all day and I saw some of the activities but I don't know if they engage her in them. Recently, the conservator wanted sole POA over my mom's health matters. They are thinking of putting her under psychotropic medicine.