1) Anjali found out about Akash and Arjun's fight so wants to find the reason for it.
2) Anjali overhears Aakash and Arjun's talk and maybe hears Aakash confess his feelings for her or tells Arjun that he is leaving NIM.
3) Same as above yet the difference is Aakash tells the full story of his achrophobia and how his best friend died. So she will be hurt that he didn't tell her about it.
What other reasons do you think it could be then?
Please post them too!