Nicki walked out on Ariana and her guides in anger without looking back, she didn't know where she was headed right now but all she knew was that she was headed somewhere. She took a stop at a certain place in the academy where she found quiet and peaceful and so she settled down there to clear her head and get rid of the thoughts burdening her mind.
So many thoughts ran through Nicki's mind in the process of her trying to clear her head. However, a particular thought that suddenly popped up refused to leave and it was about Ariana's betrayal to her.
In anger, she folded her knuckles till they turned white. She was never going to make up with Ariana because she can't be friends with a snitch, someone who pretends not to tell on her but went right behind her back and did the opposite of what she promised.
