False dv case

Good evening Respectable, I got married 4 years ago. After 1 year I blessed with baby girl but during delivery my wife got stroke on her heart we do the possible course to her in every way. Since last year her parents bring back her there home for rest because doctor said she is not fit for any kind of accretion and 7 month ago she died due to cause at his parental home after her death I send her all gifts to her parents which I received in marriage but later they demanding me gold and cash because they taken loan for her in medical expenses when I told that i was do all expenses then why you taken loan from your relatives they give excuses and i asked my gold at that of my wife wearing they said we sold it and demanding me for my wife gold and demanding me 5 lacks. They abused my parents on calls and threating us and went to police station to pressurized me and my family but thank to God local police first force me but later they said please go to the court because already 7 months of death and during married life his wife and or any other family members file complain against him in police station Or any any where. Now they reach to court and file false DV case against my whole family for Harrasing me i have all the required evidence what should I do please suggest.