Vividha is really very stupid . she discovered the druggged juice in the pot and saw the slipper. She still did not suspect Kangana. Vividha is responsible for the 3 murders. she is the one who insisted that Kangana stay with them and she was also trying to get her married to Ravish.
Vividha give the orders and everyone obey her. That woman needs to keep her mouth shut.
because of her Arthav was almost murdered by her evil father and brother. Arthav's life is still in danger due to Vividha's father.
Now that Kangana is threatening to kill her she is lost for words and she is making no attempt to free herself from the resident murderer.