It's a team task... unfortunately Rohan was in team so who would she approach when she knows it's Rohan who can easily instigate Lopa and win for the team when she, Rohan and Nitibha failed to instigate others...!!
So I don't see any wrong in it... Bani was focusing on winning but Rohan wasn't ready to even give it a try. (In case of Lopa, otherwise he was great)