Talwar was granted the parole to visit her ailing mother.
Aarushi was found murdered under suspicious circumstances in her house at Jal Vayu Vihar in Noida in 2008, in one of the most sensational cases of the decade that has inspired books and movies.
Initially, the police suspected their domestic help, Hemraj, to be the murderer, but he too was found dead on the terrace of their flat the next day.
The Uttar Pradesh Police later accused Nupur and her dentist husband Rajesh Talwar for the murder.
However, the Central Bureau of Investigation (CBI) told a special court in Ghaziabad in December 2010 that it had no evidence against the Talwars and wanted the case to be dropped.
A trial was, however, ordered and the court held them guilty and handed them a life sentence for killing their only child. While all this happened, Talwars pleaded their innocence and the case remains a mystery for many.
Nupur is in jail since 2013.