Disputed Will case u/s 420,465,467,468 and 120B

I lost my parents and brother in a car accident a few years back in India. My brother was an NRI and was undergoing a court-ordered separation/intervention order of 1 year and their financial settlement was also going on for divorce. Divorce was not filed however negotiations were on for financial stuff between parties via a lawyer. My brother didn't have any property in India. He had done a will in my favor. my brother's wife filed a civil case for a declaration suit in the lower court, which I already won and now is in session court in appeal by the opposite party. She also filed a criminal complaint in Delhi court on the basis that the will was not registered but was only notarized and the notarization also happened on Sunday. Since my brother was traveling at that time for a very small time.. The notary Ist provided an affidavit to us regarding attestation of the will. later provided another affidavit to the opposite party that he didn't attest the will.