Honestly i was waiting for that scene.
She hates him both professionally and personally as they have different ideals.
This trope of headstrong MIL hating her SIL for stealing her daughter away from her is not new but
if handled properly, their clashes and scenes can be amazing in the upcoming episodes.
I felt bad that no matter how good Ashish will take care of Nandhu, he can never prove that he is worth of her daughter. The way Vasundhra hates every single person who were involved in Ashish and Nandhu marriage is tooo much. She personally dint want to be part of her daughter's decision and she has the right to be angry only on her daughter. But except for Nandhu she feels angry on everyone (Maitree and her parents, Ashish and his whole family) and the need to destroy them.
But this drug case is going to cost Ashish so much. He doesn't know his brother is involved and so much is at stake.