My father-in-law died intestate in the year 2010. His son (my brother-in-law) died in the year 2013, survived by his widow, no children. She never stayed with her in laws after marriage. After my brother-in-law's death, she is staying with her sister in Mumbai. My father-in-law has a self acquired residential house in Thane, Maharashtra (currently occupied my my sister-in-law, also a widow, and her adult son). My mother-in-law died in 2018. My wife is the youngest daughter of my in laws. Does the widow of my brother-in-law have any legal right in my father-in-law's residential house?