My wife not letting my mother to come home neither want me to talk to my parents

My wife creates a tense atmosphere at home whenever I discuss my parents. My mother is ill and has come to Delhi to stay with my brother, who is taking care of everything, including taking leave from work for her doctor's appointments and tests. I asked my wife if I could bring my mother to our home for a few days, as I feel it’s my responsibility as her son. However, she flatly refused and made a scene. In the 12 years of our marriage, my wife lived with my parents for the first two years in the village. My mother is afraid of her and doesn't respond to any negative comments. A few years ago, I even considered separation and spoke to her brother about it. At that time, she said I should forget about everything, focus on our child, and that she would allow me to see my parents. I knew this was a manipulation, and I informed my father. He advised me to focus on our child and not worry too much about them, suggesting that I should at least try to call once a week. My father is a small farmer who relies on us, but my wife prevents me from helping him financially and is often abusive towards my family. I am now completely disconnected from my entire family, including my siblings. Given that my parents are aging and need support, I am seeking advice on how to handle this situation. Any guidance would be greatly appreciated.