So you kind of wonder why Sagar's mom who never went out of her way fusswise or word wise when Vidya was troubled by Sindoora's evil is no all of a sudden a woman who wants her way.
I think Sagar's mother is the officially the mad one in the show. She has some sort of complex. Maybe cause she was a second wife. After all, Sindoora's mom was crazy and then she had a SON as a second wife of her husband. Maybe she somehow sees herself in the role of Surily, with a son and second and all. OK never mind, the lady who never fought for anything before and couldn't even keep Sindoora from sending her son to the mental hospital, now forgets all that Vidya has done for Sagar and the family and is so pro SURILY.
CONCLUSION: SAGAR"S AMMA is a certifiable NUT!!!!!!!!!! and her son- in -law who knows about SURILY"S antics and SINDOORA"S (remember he used to blackmail sindoor in the beginning) is right there with her.
There is just too many things that don't flow in this show.....even with Sindoora's push, the sudden power of meek Amma this late in the show is a bit much, anyone agree?