My Father in Law do not want to send my wife to my house

Dear Sir/Madam, My Case is quite complicated, We got married in the year of 2016 April 27th. Soon after i shifted to hyderabad with my wife just after 8 days of my marriage. My hometown is 120 KM from Hyderabad city so we use to traval to my native place in week ends twice in a month. It was good in first 4 moths after my marriage. After that my in-laws started asking my wife not to go home town. mean while my wife got pregnant. in the month of april they have taken my wife for delivary after the delivary they have not sent back even though i went to bring back. with great deficulties i brought back her in the month of nov she staied for 4 days and again they took her back. later me and my parents visited 4 times to her house and final brought her to my hose on jan 8th in 2018. she was good on jan and we had some discussion on my late coming from office she argued with me and went to cut her hand with knief. I stopped her and i requested for not to go for that extent. It was again repeated on feb 26th night 10pm . again i stoped her and called my father in law to my home. They stay in hyderabad so they came within two hrs and i asked them to take her to house & counsil her. They took her on that midnight and never return back till date . I tried to convince her to come back but she is now complietly against me. Now she s telling that she want to join college and study after that she want to join work. My son is one yer old now. I was requiesting her to come back but she s putting many conditions like 1) She will join college 2) After that she wants to work 3) She do not want to come to my native place 4) During her college, she wants to keep my son with her mother. Her father is harrasing me and telling do what ever u want to do he will not send my wife. Kindly help me what to do . i dt want my wife and my son back.