Feeling helpless

My sister was admitted on a Treat Order with psychosis 3 weeks ago. This is the first time she and any of our family have really experienced this. She is in an acute part of a mental health unit and seems to be getting worse not better. The environment seems far from therapeutic in that there is not much the patients can engage in except to weed a garden Or draw outside with chalk. She is refusing her meds and needs to be restrained as a result Which means she is covered in bruises. Some of the nursing staff make inappropriate comments in response to her paranoia and delusional statements. She hasn’t been told about calls that have been made to her by the family or the mental health advocacy team who have tried to make contact on a number Of occasions I found out today. I am trying to engage in conversation with her by phone and went to visit but at the end of the visit she physically wouldn’t let me leave. She is so isolated and I feel so helpless. She is supposed to have a tribunal hearing to extend her order on Friday. I agree that she requires further treatment but the environment that she is in seems to be exacerbating things rather than improving them. Also I have no idea as to what immigrants should be looking at to see improvement but I guess the fact that she has not been regularly taking them is going to impact this. I’m just scared of what all this means from here and what the best responses are from me and my family. She also has two children in their early teens trying to navigate this as well. Any advice on any of the above would be most appreciated. Thanks 😊