The girl, whose mother has since died and whose brother was repatriated earlier, was handed over by Border Security Force (BSF) chief Subhash Joshi to his counterpart in the Border Guard Bangladesh (BGB).
Top brass of the BSF is in Dhaka for a five-day Director General level talks which are held bi-annually.
The young girl, Afroza Khatun, was living with an NGO in West Bengal's Nadia after her mother had died in 2009 in a hospital while serving a punishment handed down by an Indian court for illegally crossing the Indo-Bangla border.
Senior officials said while Khatun's 13-year-old brother Parvez was sent back to his country in 2010, she was held back in India for completion of certain legal travel procedures.
A special BSF team, which travelled from Kolkata to reach Dhaka for the meeting today, took the girl along and subsequently the paramilitary chief handed over Khatun to BGB DG Maj Gen Aziz Ahmed.