This is based on what we are seeing in Patiala Babes not what happens outside in Society which Is much worse.
We have Child abuse, Sexual and Physical abuse. Which is not portrayed in Mini case to explain her rudeness and no respect for her elders etc but would say that She had Bullying and taunts from her School friends and neighbour's etc. Everyone one knew that it was not right but the Khuranas and Babita did not see it in that way.
They parents had visions of there Son earning money and supporting them and Babita taking care of them but they all forgot Mini the Child carving for her Father's love and instead they have feed the imaginary Father figure for her based on her Grand Parents vision of a dutiful Son and a romantic Vision of Ashok from Babita. But when reality came infront of her, it broke her mentality.
She has had Depression and anger issues in the previous episodes but they have dismissed them as Mini is a brave child etc instead of correcting her wrong behaviour they have pampered her instead.
Babita was too busy playing the ideal Bhua that she forgot that her Child is pinning for a Father's love and instead of correcting her, she has pampered her instead. Hence She never corrects or scolds her but only slaps and shouts at her when it effects her directly.
I will go as far in saying that she is Ashok daughter in her temperament and anger issues. This has been shiwn as well when her Grand Parents say that She is like Ashok and encouraged her instead of correcting her.
There is a very thin line in being strong and rude and is easily crossed.