1. Very secretly install CCTV or spy camera in your home to record all her such thteats given to you for lodging/filing false criminal complaint/case against you. If installation of CCTV/Spy camera is not possible, collect the audio/video recording in any way you deem fit to serve as an evidence of her acting cruelly against you.
2. This will immmune you to a great extent against her future false police complaimnt/case, if filed against you.
3. You can transfer the title of your property in favour of yopur mother to ensure that she can not claim her right to reside therein.
4. Thereafter, if you decide to terminate your matrimonial relationship with your wife, you can file a divorce suit against her on the ground of cruelty submitting evidence already collected or to be collected by you in support of your allegation.