Tahir Naveed Chaudhry said today that the girl left Pakistan with her parents, three sisters and a brother on March 14.
A Muslim cleric who lobbied for her release, Tahir Mehmood Ashrafi, said she'd faced threats and was moving constantly.
Canada's immigration service said privacy concerns prevented them from saying whether she was in the country.
The girl was arrested in August in Islamabad after a Muslim cleric accused her of burning Islam's holy book.
The cleric was later accused of fabricating evidence, and the girl was acquitted.