My Badi Saali (Elder Sister-in-law) Mousumi is actually a year younger than me. But she is four years older than my wife, Sahana. Not my wife's own sister though, but her first cousin. My wife doesn't have any sister of her own. Mousumi is my wife's Uncle's daughter. But they are quite a close knit family. This uncle's family lives in the adjacent flat of my in-laws’ flat. So whenever we visit my in-law's place, this Saali comes over to meet us. Although Mousumi is younger than me by one year, since she is four years older than my wife,