A Shocking Encounter at the Market with My Ex-Mother-in-Law: She’s Unrecognisable!

A surprising encounter at the market with my former motherinlaw: she was unrecognizable!
On a Saturday while shopping, I ran into my exmotherinlaw. She had changed a lot and looked older. I hurried over, greeted her, and we began talking about life. She didnt complain about her son, but I quickly sensed that things were tough for her. She said goodbye, yet insisted that I call her the next day. I feel sorry for her; I lived with her for ten years and had a good life. Later, the son introduced a new wife, claiming she would be better than me.
I had lived with my husband in his mothers house for ten years. Pedro immediately suggested we didnt need to buy a home because his mother had no one else besides him, and the house would eventually belong to us as inheritance. His words struck me as odd; he shouldnt have spoken that way. When I started staying with my motherinlaw, I noticed she was a very calm and kind woman, radiating warmth.
After we married, my husbands attitude toward me shifted completely, and even the birth of our child didnt change our situation. I didnt feel we were in a real partnership. Only with my motherinlaw could I speak openly. I never said anything negative about her son out of respect, yet she seemed to understand everything. She consistently helped me with the child over the years.
She took the son to kindergarten, then to school, and always prepared meals for us. Ten years passed, and unexpectedly, my husband announced he wanted a divorce. He claimed the house was his, so I had to leave. For the first time, my motherinlaw stepped in, urging her son to rethink, save the family, and consider the child. The plea fell on deaf ears; he had already decided and wouldnt listen to anyone. I packed my things and moved out. He moved in with his new wife, and I rented a room from an older lady.
Now life is hard; I earn just enough to get by, and my son and I live in someone elses home. The lady we stay with isnt cruel, but she has a difficult temperament, always dissatisfied, and everything I do seems wrong to her. My son and I eat our meals in our room to avoid crossing paths with her.
One day at the local market I saw my motherinlaw again; her eyes were sad. She didnt complain about her son, but I realized she, too, felt uneasy in her own house. We had an honest conversation, and she asked me to call her. I feel deep sympathy for her and would gladly take her in to live with mewe could support each other, shes a good person, yet I have nowhere of my own to go. What should I do?