Divorce Guidance

From June 2015 she living her parents house that time she is pregnant and January 2016 she birth one baby boy many times I try many times to get back to my home but no response,her parents want me to live with them, in her house,but that not possible because my father is kidney failure patient and I can't leave him alone because nobody with my father he and me living in one house then how I leave him alone,so i strictly tell her family this is not possible for me,then I went to meet our Panchayat president for justice, after meeting they decided and advice me to bring her back I have to be given back all her gold jewellerys and get back to her your home,then I settled all assets but then also no response,after that I send her one legal notice on 2016 Nov to comeback in 15 days to my home,she received notice but no response no reply.after that her family gave me mentally torture,they spoil my image and my name in my society,they link my name with other girls as a adultery,and from that time I stopped to contact them with her parents and her family.after that 2018 February my grandmother expired then also her and her family and my son didn't attend that day,Next 2018 July my father expired that day also her and my son not present in that day at my home.at last iam in depressed and living alone without my son , I need justice and claim for mentally torturing and for depression,and spoil my name in society. know it's been 2015 to 2019 iam living alone,I want divorce. Note : I need back my son for his shelter and food and education I accept my son for his better future which he deserve.,but not her because she didn't respect me and my grandmother, And my father death....if they not give back my son then I need divorce with claim.. Please guide me what to do ?