CM has decided even before she met Anandi that she is not girl for Shiv.
She does not like the idea of Shiv marrying this girl.She does not want the marriage to happen at any cost.
So her thought process runs only along that direction.
She voiced her doubts about A not being nayee naveli dulhan to Irawathi and she brushed her off.
She made a big issue of Shiv's sister's reaction to A.She made it seem like it was absolutely essential to get consent from that ill mannered rude girl.The family brushed her off.
Then she told Shiv her concerns about with regards to him marrying a divorcee. He also brushed her off and told her how confident he is of his love and how confident he was about his Anandi
Then she tried to put off A by taunting her in front of the entire family but A put her in her place so beautifully.
She heard the news about the return of Anadi's ex husband.Now she thinks she she found a chink in A's armour so she is going all out.Telling her to return to her first husband since she still has feelings for him.
Is it her over protectiveness towards Shiv that is making her behave that way?
Is her resentment towards A because Shiv has handed over the controls of his life to this girl?
May be both over protectiveness and resentment that are making her disregard all the boundaries.