The Hibiol fabric. Why does someone creates a language that is slow to 'write' and involves literally spotting thousands of tiny little threads? That would take forever to decip- Oh wait.
The name of Ariel and Dita's daughter is never given. But when you think about it there's only one name they would have given her. The name of the woman who raised Ariel and was there for Dita in childbirth. Maquia.