How did Ayesha know that Milind was back in town? She asked him to watch the party live on TV and even come right away. Didn't know audiences in Bangalore are interested in watching the goings-on of some college in Mumbai and that to live on TV!
Also, didn't Milind say the meeting was in the evening? That has to be the shortest meeting on record if he was back in Mumbai the same evening to catch the party on TV!!