Nikki was calling Jaan bachha for trusting Aly who nominated him, because of whom he was eliminated. Saying he doesn't know how to judge people.
Arre pehle apne girebaan mein jhaak Tamboli. You were the one who said that if Jaan leaves the house, it would bring you mental peace. And now when he's out, you're crying like a widhwa whose husband just died.
On a side note, she was calling Kavita delusional while talking to Pavitra when she advised her that she needs to buck up as her game is becoming weak. She would've never dared to say the same thing in front of Kavita as she has became her secretary now.
Par haan Bhai, Nikki toh Kabhi bitching nahi karti hain, kabhi peeth peeche baat nahi karti hain. Jo Mann mein hain woh zubaan pe rakhti hain, chahe wo baat jitni bhi ghatiya ho.