I feel I can relate in ways. It is somewhat similar and I felt like sharing.
There is a long set of stories from out of my life involving my nephew with the department of social services, the courts and lawyers, dealing with his mom and dad, and the grandmother. It was a mess for years! I ended up being the main player, or target, or whatever that was at the time, as his legal caretaker.
I saw the father deliberately back his mother into a corner in many ways. It was full of heroin and jail, and unimaginable other things. He kicked her out of her rented condo by switching the lease to his name secretly and kicking her out when she was six months pregnant.. back when it all really started.
I tried to help her for years. I remember there were a lot of resources and programs for her, as a single and an abused mother. This was true even after she was in and out of jails and rehabs, and as a recovered addict (at times), there were always still some people with the power and ability to help her in her situation, even for free.
I was amazed later for myself after being homeless. I found there was available low rent housing for short and long-term, and transitional options. I did not need a cosigner. They would pay most all of the bills and the deposit (a percentage for up to 12 months). It could be renewed again at the 12 month mark. The program was taylor made specific for my case, but it came from a much larger housing program, which also helped to provide affordable housing to families who needed it... Plus, homeless people, recovered drug addicts, single mothers, abused woman, and veterans... I believe these different groups of people being helped all had specific housing authority guidelines made for them, as it was for me?
If needing to change things around a lot, hopefully the pet bird is kept alright too.