I think that Nimmi is honestly thinking that this Lucky aka Nandu marrying Preeti is a good idea. Sh is naive so therefore she makes mistakes. She listens to everyone after throwing a temper tantrum. She isn't exactly as sharp as Sarla or Shanti.
She seems to honestly thinks that Nandu jiju is a good idea. The drama writers might be identifying Nandu and Preeti as a potential pair despite all the problems and disapproval of Preeti.
I do not think they would show Nimmi plotting revenge against Nimmi, but to be honest, I would rather that your idea be the logic behind this nonsense. After all, Nimmi has been threatening Preeti to revert back to the old Preeti otherwise she will show off her bad side.
I still cannot believe Nimmi chose to side with Nandu after spending her entire life with Preeti. She knows, basically, all of Preeti's history and her feelings, but maybe their estranged relationship is the cause of this malfunction.
Anyways, I used to be quite causal about this drama and enjoyed it for fun.
Now, it is taking a scary turn. A lot of viewers dislike Preeti and wish for her to be punished with Lucky leaving her or getting kicked out the house, but I personally wish that they sort everyone's feelings quickly because they are very toxic and orthodox.
(Why does Preeti need to be married to be respectable? đĄ What happened to her job? Why doesn't Preeti get a larger spine and say she wants a divorce without looking for an excuse to leave? Riya should get her modern views into order! )
The drama makers are sending the wrong message and it is affecting the viewers. Let's hope for the best, but this drama might become too hard to watch in the next couple of days.
I personally found it disturbing to watch Dadi force Preeti to apologize to Nandu's shirt several times knowing that Nandu and Nimmi are lying about the death.