Saloni has blocked out all the sad memory from her mind. which is called partial amnesia.
When person can not take so much pain his/ or her brain blocks out sad part and memory of his/her life from their mind.
Sp is really getting interesting. I just can't wait to see what happens next and how they bring Nahar in the story line.
i am sure saloni remebers Neel now but not Nahar and knowing this i don't know how will nahar feel.