This lady is the only person alive today who knows her native tongue.
According to linguists the Kusunda language spoken by a tribe in Nepal, is phonologically [speech sound], morphologically [language structure] and syntactically [construction of language] distinct from every other existing language in the world.
You can read more about the Kusunda here http://www.bbc.co.uk/news/world-asia-17537845
(via filsdelalune)