My wife is staying at her parents place from past 8 months and now saying that she will file 498a

Me and my wife will be completing 3 yrs of marriage in Dec 2018. I am software engineer(Bangalore), she is a home mkr(Rajasthan). Initial 1.5 yrs wer wel n gd. But in July 2017 her younger sister came to my place for a month and then they both went to my wife's native. Everything changed from then. Aug 2017: She started forcing me for baby. I keep telling her we will have it in 2018 or 2019(she was just 23, I was 29). She understood and said ok. But she was very rigid on that. Oct 2017: We got pregnant. Nov 2017: I took her to my native for some 15 days and then to her native for 15 days to attend her cousins marriage. She was sad when she was at my place the whole time but was very hpy when she was at her place and I was hpy to see her smiling after a long time and ignored why she was sad at my native. Dec 2017: When we came back from her place she was totally changed and she had stopped talking to me. I called my parents so that they can take care of her during initial phase of pregnancy. She didn't speak to them for 10–15 days continuously, I ignored and thought this is happening because she is having mood swings and vomiting tendency. One day when I came from office late and was just telling her what happnd at office, she started shouting and fight with me. My mom knocked the door and asked what happened after hearing the shouting (12:30 in the night). I opened the door and my wife started shouting at my mom that “you get out of here, you and your son are bad”. My mom told us you both are shameless and you guys don't care about the baby, you would not be doing it otherwise. My wife called her father and started saying “they are saying they will get me aborted, they are beating me.” I snatched phone from her and said she is lying then his father told me “she is right you are torturing her. What have you given to my daughter till now, did you gave her necklace or money etc.” I told him “ please don't talk to me like that, if you want to talk and know what I have given her, come here and see. Next Week: Her parents, maternal uncle and Aunt (mediator during marriage) came suddenly at my place. They started fighting with me and my parents. That time, for the very first time they said they have issues in me supporting my parents financially and they asked me not to give any money to mom-dad. They got a letter signed(not on stamp paper) from me that I need to give 20K monthly to my wife for her savings and expenses. This time I felt that they actually had a problem that I snd money(genrly 10-12K mnthly) which I used to snd to my parnts. Jst bcs my wife was in initial stage of pregncy I acceptd thr demand and said now I want peace in my house. Nothing changed and they(wife, in-laws) were still not talking to me Jan 14: My parents left for my native place. Jan 18-Feb 5:Only MIL ws at my plc. Mar: My wife was not able to handle pregnancy and said I want to go to my native for delivery, I cant go to your place as the water dsnt suitme.