Bro, this is terrifying—but *breathe*. First, your sister’s safety is priority. If Jiju’s physically abusive, document *everything* (photos of injuries, texts, call logs). She needs to get out ASAP, even temporarily. Reach out to domestic violence orgs—they’ll help with legal steps, shelters, restraining orders. DNA tests can backfire *on him* if the kid’s his (proof he’s unhinged). Don’t confront Jiju alone—dude’s unstable. Rally trusted cousins/friends for support, and loop in your parents gently—they’ll wanna protect her too, even at 70. If divorce is his threat, lawyer up (many do free consults). Screenshot his crazy accusations—they’ll matter in court. And sis needs therapy STAT—guilt and fear are glue for abusers. You’re not helpless here, just overwhelmed. One step at a time. 💪
Personally, Meri bhen ke saath aise kre, jija sala ki hadd paar hi honi hai seedhi. 😄