I don't think the message of the film is just "we all need to communicate with each other". It's that language has an enormous impact on the way we think and process the world. The film suggests that interacting with different cultures can initially be tense, jarring and raise the possibility of mistrust. But fully understanding a culture and the way it uses language can ultimately open up our brains to new possibilities. That's what is memorable about the film for me, much more so than the philosophical question about her daughter. Not to say one is right and one is wrong. Just saying that this layer of the film worked well for me.