I have a Land Lord Tenant question. I have residue at my rental for 10 plus years. It's a mother I laws house behind a main hm. Myself and the landlord have had no issues. However the son has moved in. He's in his 50's. Since his arrival ever rule established by the land lord has changed. Not by the land lord but by the son. To the point ever day is a hassle to leave my hm. However when brought to land lord attention. She's 80+ years old. Says she has been have problems with abuse and is scared. I also have a rodent problem as well for months. Tent has already notified in writing to land lord previously. I wish to report abuse, however don't want harm to the land lord. By land lord I mean land lady. Any advice?

Optional Information:
Country relating to Question: United States
State (if USA): Arizona

Already Tried:
Notified landlady of several housing Ac, water, rodents, broken windows etc. need to be fixed. Some fixed at great exspence to owner. Some the son tells his mom he will handle, to no avail. I'm planning on looking for other residence. However she has just buried her husband and my rent helps her. However she cannot and is terrified of her son. He tells her what she can and can't do where she can and cannot go. Verbally abusive. She says she stays in her room it's less confrontational.