But in Sreemoyee, elder son is permanently bad and his wife becomes good. Whereas younger son is very good son but his wife turns out to be opposing Sreemoyee everytime. Because they probably want to show that life is unfair sometimes. When her son is good, daughter in law becomes bad, and vice versa.
Secondly, in Bangla, daighter and elder son scenario is just opposite. Here daughter became good. Bow she supports her mother.
And you know why they kept mother in law bad vamp for such a long time? Now comes the twist. Sreemoyee's husband's second wife takes over the house (after Sreemoyee leaves along with daughter, father in law and younger son) and buys it in her name by taking advantage of mother in law. Then she wants to buy a flat and sell the house. When Sreemoyee's mom in law understands this girl is vamp, it's too late. So she protests, and in turn, she has to work much due to forcing by the vamp. In current episodes, she fell ill, and then Sreemoyee came to take care of her. The story is going good now. Only that Sreemoyee's contender Krishnokoli is having stronger story twists, otherwise Sreemoyee would have been in top 5.