What can I do if my wife is threatening to file 498a IPC against me?

My wife is threatening to file 498a : once my mother and wife had an argument then she called her mother and started shouting and accusing that 1)my mother is beating her(not happened) 2) I strangled her neck( I held her mouth,as she was shouting)i have video records that we didn't touched her. dowry case : I am in government service and I haven't took a single penny from them, instead I have given them money while they were purchasing jwellery for my wife. She never listens to my mother and gives reply in a very bad manner,so in reaction to this only my mother used to ask for the home essentials such as tv fridge etc which they promised to give before marriage. I will be very thankful if someone helps me out with this . Should I be concern,what will happen if she files a case? .