Provision of the evidences will be given as evidences.

Hello sir.. I got married in the last year. My husband and in laws tortured me to bring money from my parents. Before the marriage my parents had given them some cash in terms of help which they asked us because they were in some troubles n said if not otherwise they will cancel the marriage. Just within 3 days after marriage all of them came my home and abused my parents and a very big quarrel happened in my home.. And my husband hit my father and also to my neighbours. Now they don't want to keep me with them and not ready to accept that they have received money from us. Also all of them tortured me mentally just within one month of marriage and forcebly they asked me to write a letter regarding they didn't recieved any dowry from my parents. Since am very much afraid of them I have written as they said.. We have given complaint against them and FIR also filed under sections 498,506,504,323,448,149. My question is now what kind of evidences will require now to proove they are not innocent??