In this whole melodrama she made karan apologise for asking shamitha to massage him and then says u have to prove that ur sorry by playing only with me in the remaining task.
Madam knows without karan there is no entertainment that she can do.
And then under the kambal she was discussing about rakhis insecurity. All I could see was rakhi was trying to entertain and teja was just being a leech on karan and trying to get his fans votes towards him.
From the beginning she knows karan is the most popular tv celebrity in the house n being seen with him will get her the screen time n votes..