My wife threatened to file a false police complaint against me and my family for dowry and domestic

My wife threatened to file a false police complaint against me and my family for dowry and domestic violence. We've been married for 10 years and have two kids (6 and 3 years old). Can my wife file a false complaint for dowry after 10 years of marriage? If she files a domestic violence case, does she need to submit proof, or are verbal allegations enough? Although there have been many fights during this period, no formal complaints were filed with the police or court. However, I have provided some written information to the police regarding the fights and false allegations. If I file for divorce, what problems (cases) and issues might I face from her side? If I file for divorce under cruelty because she abuses me and my mother, do I need to prove these claims? Kindly help regarding the same. Thanks a lot.