1) obtain in writing from your wife that no demands for dowry were made before or at time of marriage or after marriage
2) I presume there has been no fund transfer from wife or her parents account to your bank account
3) if any funds transfer done then return the said money to her account
4) all her jewellery should be in bank locker in wife name
5) file for divorce in India . No fault di once obtained in USA is not valid in India
6) wife filing false DV case amounts to mental cruelty and is ground for divorce in India . It’s dismissal would strengthen your case