False sc st & dowry case

My younger brother's (Vasu) wife filed a case against my family of 5 (including his husband), cases are 3 (1) (r), 3 (1) (s), 3 (2) (va) SC ST POA Act, 324, 34, 498-A IPC, 4-DPA. My brother has filed divorce in December 2020 because She had live-in relationship with someone else. After 6 months affair wih another person, she filed similar cases against that person and he was jailed, but during that case police investigation revealed that shes a converted Christian so SC ST Act would not attract. Now again she got SC certificate & filed these cases. We are 3 brothers living seperately after our respective marriages and my parents are staying with my elder brother. After filing divorce Vasu started living seperately. One day she went to his place and made a murder attempt on him which he resisted and in defence he pulled a piece of broken vessel from her hand, she had a cut on her left hand little finger. She got Medical Legal Certificate and filed above said cases, not only on him but every one of us. Recently we got to know she has arranged some fake witnesses to establish the proofs for above cases. What to do with this?