[Ollie doesn't consider there to be anything that odd about saying back home; it could mean this girl is from another world, but she could also just be referring to whatever part of this world she came from. And Ollie isn't going to risk spilling too much about herself until she can be sure one way or another.
So she focuses on the language thing, instead, taking a moment to write again:]
Deaf and mute people created it. There are signs for most words.
[And to demonstrate, she points to a few words, "deaf", "created", "words" and shows Korra the associated signs.]
no subject
So she focuses on the language thing, instead, taking a moment to write again:]
Deaf and mute people created it. There are signs for most words.
[And to demonstrate, she points to a few words, "deaf", "created", "words" and shows Korra the associated signs.]