1. No body can say what the police will do after 6 datys since lot of things depend on the evidence your wife has submitted before the police in support of her allegation against you.
2. However, co-operate fully with the police and if they register a FIR against you and your family members, you shall have to avail anticipatory bail for all the accused.
3. Engage a local lawyer before hand for applying for and availing the said AB immediately after coming to kjown about the FIR No. from the police station.
4. You can file a divorce suit against her on the ground of cruelty. Please note that lodging or filing false complaint/case against the husband is also considered as cruelty on the part of the wife.
5. If her complaint is proved to be false before the Court, you can file a criminal complaint/case u/s211 of IPC against your wife for lodging/filing false complaint/case.