So many of you have been wondering this. But you guys are forgetting something. Avni said her mother was kidnapped, and avni has been wanting to make sure nobody finds out her connection with neela. She doesn't want ANYBODY to know she is related to neela. There's no secret behind avni wanting to make sure neil doesn't see neela. It's simply because she doesn't want anybody to know that neela is her mother, which is why neela even went to amol and made a deal with him that he wouldn't tell anybody that she is ananya's mother. Ananya is just hiding her connection with neela from daya and anybody connected with daya, including neil. There's no other reason that avni doesn't want neil to see neela. I hope everybody's suspicion over this is cleared.