She is hurt that Abhishek is out and Niroop has broke their friendship. When somebody is in a bad mood it will make them behave rude and aggressive. This is what we see in Priyanka today. Although the food measuring I feel she has a point as she and some others hm has been out of food because people ate too much and didn't care whether there is enough for everyone.
she blindly believes only abhishek which is not good for her..