She never wanted to marry. She was forced to marry this complete stranger. Any girl.would have been terrified in this situation. Adi is not someone who would take advantage of an alone girl and that's one of the good parts of his character. So why does she feel pain seeing him and Malini together? She should be relieved that soon she will be free from this unwanted bond.
Frankly speaking she should again start her friendly banters with sunder. They are so fun to see. Much better than adi taunting and accusing her all the time.