My sister got married around 2 years back. her mother in law's berhavior is not good with her she use to abuse my sister and my family. and my brother-in-law was ignorant about all this.. then after 2 years my family decided to talk to their family but instead of listening to the issues they started blaming us for interfering in their family. Now my brother-in-law also started misbehaving with my family on calls and now he is saying us not to ring my sister at all..
Please suggest what should I do in such a situation.