Theft Encroachment and Trespassing in property

In the year 1981 at Jhansi UP my father purchased a home in name of his mother (my grandmother). She allowed my chacha ji (her younger son) to live there Chacha ji was in Govt job at Jhansi. My father did not object and things go on. Fast forward in 2001 my Chacha ji died survived by Wife (my chachi ji) and a son (my cousin). Chacha ji’s Son (my cousin) got Anukampa niyukti and married in 2008 but sadly died young due to kidney failure in 2010 without any kids. His widow then got his Job as Anukampa niyukti in Govt. In 2013 this girl remarried to another Man and After that my Chachi ji was alone at the home and had no relation with the girl (former daughter in law) she was not even taking care of her . In 2013 after the girl remarried my Grandmother decided to make a WILL of property so she decided to make a will in My and My brothers favour and made itband we got it registered. But we always allowed Chachi ji to live until Chachi ji is alive and also taken care of her time to time. In 2017 grandmother died and in 2021 Chachi ji died at the time of Second wave of Covid when no one could come to attend her due to lockdown. Now here starts the trouble this Girl (Former daughter in law) now came back pretending to do last rites of chachi entered home and then Stolen her Jewellery, all Documents including a registry copy of home, Also got Death certificate of my cousin and Atm cards of chachi. We later came to know she had cunningly got herself nominated to Chachi ji bank account as well in 2012 in the name if helping chachi as she was old. She made Chachi ji Death certificate and shown her as her successor and withdrawn all her Bank account money. Though she was aware that the house was never in name of Her former Father in Law, Mother In law or Husband but she was Unaware that there exists a will so Shamelessly she started claiming rights over property and first she put her name plate on our home, then Put some illegal occupants recently and asking money to handover keys. So now I need to go in Police to make a criminal case of - Theft, trespassing, intimidation, extortion also misconduct and Criminal motivated behavior by a Govt Servant as she is in Food corporation job. Is it possible to make a strong case against her as per the case explained. Also my questions are - 1) Is there any grim possibility that she holds any rights over property - if yes can her wrongdoings like Encroaching, illegal possesion, tresspassing, theft makes her rights weak and make her liable to be criminally trial first then tak about other rights 2) Can her Govt job be challanged as per her criminal conducts 3) I live and work in Hyderabad while crime is happenign in Jhansi can I file FIR in Hyderebad 4) If matter goes in court where will it be preceded Hyderabad or Jhansi and can I ask it to be preceded at Hyderabad 5) Can I also challenge the money she got from chachi bank account 6) Can the illegal occupants be also charged in FIR plz ignore spellings