Anu was still finding her way around... She was in that frame where she needed to think the worst about him, so he doesn't invade her mind. In truth, he had never left her thoughts. The heart - mind dialogue was so applicable to both of them, regarding each other and also to Sid's relationship with his dad.
The fish fb started here. How they remembered each and every conversation so clearly after so many years! They remembered every detail of their friendship!