When you move into incidents such as this fish one - the objective of the scene is to keep everyone confused about what to feel.
Each of us and the audience in general comes from different back grounds - some more traditional than other. Some who experience being in constant conflict with their MIL and other who have no clue what that means.
Every character always ends up looking slightly bad to a portion of the audience after a scene like that. And Mohini will keep creating these scenes. So get reads folks.