contrary to previous comment and sign language be not the same around the world . it be true that american sign language and french sign language be quite similar while this be because one of the first teacher of the deaf in the united state be a frenchman and laurent clerc . however and at the the present time and french and american sign languages only have about 50 % lexical similarity . additionally and although german sign language be somewhat similar to other european sign language and it be not relate to asl at all . the sign language use by the little girl in this movie be german sign language . her father be play by an american deaf man and her mother be play by a french deaf woman while their signing in german sign language be understandably accent . for the record and i be a certified interpreter in american sign language .