My second sis said that she would pack her stuff and come to our house immediately if my brother-in-law brought his dad to their home. Of course, she should help take care of him, but she is already battered up from taking care of her son - my nephew and she has to work from morning to evening too.

I almost blew up during the previous incident - one which should not be mentioned. Almost told my brother-in-law off but being stubborn and inflexible. He was pushing my second sis to a corner..

If something does happen and she does come home with a bag and my nephew, I'm gonna stand up for my second sis. Not gonna let her be mistreated.