Nikki doesn't need anyone's loyalty. She is upset because log cheezein mooh par kyun nahi bolte. Agar unhe nahi nikki ko bachana toh seedha uske mooh par bole na. Only this thing irks her that log peechhe se cheezein karte hain
They were discussing task with Hina/Gauhar. Koi haar gaya hai ghar se jaa raha hai u can't tell em aisa kiya waisa isiliye haargaye. That's basic