Separation with Wife

My wife left my home after a small rift on 11th April and Two days later she went to Police and took her clothings and Bank documents...I never told her to do that... Or never said anything about separation... Then after 3 months she again contacted the Police and started asking for her jewelry and the things she received during wedding.... During that time my mother was admitted in ICU and she was really serious and I told my wife the same but she kept on calling me and the Police so on 14-15th July I gave her all the stuffs that she had received at our wedding and the stuff that we bought together during our marriage just keeping the jewelry on hold as my mom wanted to give that herself.... We called our family elders on 11th August and her family and gave her jewelry and 80000 which she said is the money she spent on the wedding...And my family elders asked her and her family twice that if they were want to discuss anything more or is there anything else to which they declined and and all the family members signed on blank paper saying that there will no legal actions against each other.... Now she has gone to some NGO and wants to get more money from us which is just not right..... The worst thing is, she is my family relative and not an unknown family.... This is causing a lot of stress to my family and my professional life....My family and I never asked to her to leave our house or marriage... Everything was initiated by herself.... Her mother involvement is to that point that we can't even plan a baby... Because her mother told her that if she has a baby then she'll be dependent on me and her liberty will be gone.... Her sister got divorce with the same reason as me and my wife and they never asked the boy for anything.... Please help or suggest what I can do to counter this.... I'm even ready to ask her to come back and I even sent a notice to come back within 15 days which she ignored...