What should I do about my Alzheimer's Mom who has become agitated, aggressive, and resistant to care?

Mom has been in a nursing home- a memory care facility for 2 years. She had been very agitated before she went into the facility. She was helped by seroquil and trazadone. That worked until last month when she got sick. They had discontinued her aricept and nemenda around that time. Now she isn't eating well, seems really out of it- not really caring that I'm there when I visit. She has become aggressive with the staff, especially when they try to provide care. She even attacked her roommate last night! The dr has been messing around with ativan, vicodin (maybe she's in pain- she can't communicate) and has started her on keflex for a possible urinary infection. She won't cooperate for a urine test. I visited yesterday with my family- husband and adult sons- and she was so stoned on meds that she was unresponsive. Then we leave, she wakes up and attacks people! I'm at my wit's end. This is so not my sweet mother.