May be unpopular opinion .i have not seen this scene completely. If manjari has only done this much i don't see anything wrong in it.
I am using my cats as an example as i consider them as my kids. I have lot of cats. And i also feed some other cats which are not ours they are outsider. I started feeding them out of courtesy and even loved them equally but slowly the cat started scaring our cats. They started picking up a fight and hurting my kittens. Now my choice is to choose between outside cats and my cats. Obviously i will go for my cats. As they will have higher preference and slowly i started feeding them less and started splashing water so that they can find another source of food and place to stay and start relocating from my place so that my cats are safe.
Here manjari is also feel threatened as she feel her family may break apart. She has to choose between her family and abhir. It's difficult and manjari did the same thing which any other person would do. She is feeling guilty of doing it but she don't have any other choice.
https://twitter.com/naima_shen/status/1654029991330414592
Ignore if you disagree. But this i felt from my own experience so i don't see anything wrong here. She is just trying to maintain distance from abhir so that he don't influence her decision and she can ensure that her son moves on and stays happy.
I am posting it here to know if any one feels the same.
Since most of the posts calling out this action i wanted to make this post.
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