No.
Kangna planned all this, she waited for Vividha to lose her cool, she knew that Vividha would never speak against anybody unless its something about her kids or Atharva. And yes Madhav is Kangna's pawn, as horrible as it sounds, yes but Kangna being the real mother is using her son as a pawn to hurt Vividha and that is very well understood because sooner she will marry Ravish and sit in the house forever.
Atharva always takes his time, and this time its about Vividha and madhav, he loves both of them and he cannot see anything hurting them. He would not do injustice with kangna because even he realizes that kangna is madhav's biological mother but he also realizes that from where vivdha is coming and how she is feeling. I just feel sad for him, its easy for Ravish to shout at Vividha and say that she is over reacting but Atharva does see why vividha went beserk.
Vividha was always very sensitive, and i know people think she is selfish because she dumped Ravish, but if she is so hate able because she dumped Ravish then how does kangna earn so much sympathy being a cold blooded murderer? the people who call vividha names actually think kangna is better just because they see a possibility of kangna and Ravish romance. Anyways i am not bothered as long as Ravish and kangna are proved wrong, which they will be in future because kangna is evil and its obvious.
One more thing about Vividha is that, she has become sensitive and impulsive only because once she wanted Atharva and she lost him in a brutal way, a new husband was gifted to her by her father and that killed her strength. Now when she lost madhav, khushi has been gifted to her by her father again, but now she has no more strength left to swallow her pain in silence. As a mother she has never failed, may be as Ravish's wife she could never make people happy but as madhav's mother she has never failed.
Lastly, I don't understand how did kangana suddenly go and throw the custody papers ? Does not she even think how will Madhav react ? The child ofcourse loves vividha and Atharva more, and if kangna would truly love her son then she would understand that a 5 year old cannot be snatched on the basis of law.
I think Atharva stands out to be the most sensible character here, he has to handle khushi, he handles madhav's questions, he handles vividha's fears, he does silently digest Ravish's mis-behavior with vividha, he observes everything and in return he only expects vividha to come out as a satisfied and happy woman. Lucky vividha, no wonder she actually broke all the social norms to get him, he truly completes her.