Hi
Sometimes we need to leave and that's the only thing we can do when we are young. I don't know if this is the case but sometimes we need to get very upset and cut ties in order to be ourselves because when we live or have toxic people around they will do whatever it takes not to let us grow. Because if we grow we put their own poor lifestyle in evidence. They cannot even think about it. Because it would be an horror to see how they are really. I don't know but your grandma seems to be a sick person. It reminds me the step mom of my father. Lord! That woman carried too much suffering from her own childhood but she was horrible herself. She was a real spider. I was born poor in a country ruled by dictators. Some of my family members were killed by the dictatorship, another ones disappeared. Other family members did not fight the dictatorship, they just adapted. We had domestic issues, as well. I know that poverty somehow affects our expectations but on the other hand it gives us a lot of endurance, once we open our eyes and see the limitations our poverty brought to us, we can also take advantage of the training poverty gave us, as well.
Again, I don't know your case, but in my case, I had to leave and get away in order to rule my life. Then I could come back but in my own terms. To me it was necessary. It was not easy and it took time. But it was worthy. I wish you good luck and send you a big hug