Property purchased jointly

Hi Sir, I am 44 yrs old and my wife is 41 yrs. We have a daughter who is 4.5 yrs. My mother is with me & my father expired in 2020. We are not at all compatible with each other. She doesn't talk with me nor my Mother nicely. She often shouts and abuse my Mom when I go to office. We often fight as well a lot and I can see the impact on my daughter's behavior as well. I have tried a lot to revive our relationship but nothing is happening. Her family members have stopped talking to me and has left the fate of this marriage at my wife discretion. We purchased a flat in which we both are Owners. Initially I invested 7.5 lacs in the Flat and around 2.5 lacs my wife paid. There is a home loan which is going on for 31lacs and my wife is paying the installments. I am taking care of all the household expenses. She says that as she is paying the installments so it's her flat and I should take my mom away. I do not inherit any other property as my father didnt had a good financial position. Before marriage also we used to live in a rented house. After marriage we purchased a flat. We both are earning a Monthly salary of around 70,000/- each. Can you tell me what will happen to the property jointly purchased by both of us. Also what is the maintenance amount which I will have to pay to her and my daughter.