My Younger Brother Wife Complaint against Family Member, My younger brother has passed away

I brother got marriage proposal through a friends & relatives in Tamilnadu only. She and her parents stay here in Mumbai and marriage happened in Tamilnadu . After marriage in 3 months my brother passed away and she went to native on that day itself now she made a complaint in a Police station (Mumbai Kalyan) and they are claiming that it Is her staying and hence they want to put on the FIR there itself. DP Act and 498A,506.34,504 and 323 My question is, when she got married, we all are staying in Tamilnadu and Their marriage also happened in Tamilnadu only. Can she report / complaint /File a case in a different State just because she has her friends and few relatives who have political and police support so that they can trouble me with false complaint and allegations? Do I have any right / any section to question why the police is accepting the case when we stay and the marriage took place in a different State? Please help me with the details as I want to counter the situation.