Wife living at her mother home and demanding maintenance allowance

Hi mam, one-day bickering had happened between my mother and wife in the evening so my father said you take your wife at your rented place where I do a private job but due to some insufficient living resources at my rented place I decided to leave her at her mother place with my 3 months old male kid. After one month my sis call her to know about her nephew as i am only one son in my family. there my wife said, the baby is not well, then my sis said if my nephew happens something it will not be good. Now my wife is saying I will not live at your home I can live only with your or you will have to give me maintenance allowance at my home, she is not working but she is M.A and B.Ed. Please suggest what can i do here. I don't want to leave my 60 years old parents. moreover, she says, you will have to tell all about your salary and expenses where do u incur. She says you pay your salary to your both elder sis, while my both sis is well settled. I am moderate person.