Nigerian officials say the first Chibok girl to escape from Boko Haram's Sambisa Forest stronghold is expected to be feted by Nigeria's president this week, as her freedom adds pressure for the government to do more to rescue 218 other missing girls.

Renewed hope has met the discovery of the 19-year-old, though she may be too traumatized to understand her central role in the tragedy that captured the world's attention.

Family doctor Idriss Danladi said that the young woman said that some of the Chibok girls have died in captivity. He said hunters found the young woman and her 4-month-old baby on Tuesday and reunited her with her mother.

Boko Haram seized 276 girls from Chibok boarding school April 14, 2014. Dozens escaped within hours, but 219 remained captive.