I agree that they could have chosen either of them to be khooni. But, they choose Shivani which shows that BB believes that she is someone who can give much more content to the show than those 3 - Madhav, Kishori or Rupali. So, I believe this is a test given to her by BB to prove her mettle. If she is successful ( as was yesterday) and keeps her calm in the next few days, she might be converted into a wild card. If Parag is coming in as a wild card as reported than why not her ?
Strictly speaking neither of them should be called back. But, this year they are struggling so much for TRP, that anything is fair and they feel that these 2 ( Shivani/Parag) and perhaps Abhijit Bichukale can give much better content than some of the current contestants. So, fair enough.
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