How Do The Travelers Understand Each Other?

This week I wanted to talk about a cool aspect of the Pendragon series that in no way makes sense. Obviously, the people on different planets speak different languages, and in the beginning of the series it was explained that all the travelers would hear each language as the language they know. But I always wondered what would happen if one traveler wrote something to another traveler, would the letter come to the person in their own language, or in the traveler who wrote it's language? Another thing, now all of the worlds are mixed, so are the people from each planet able to talk to one another?

One thing that happened this week in my reading was that Elli Winter, the traveler from Quillian, realized that she will have to come face to face with her daughter, Nevva Winter, who (a few books back) joined Saint Dane in his idea of destroying the travelers and making a new universe. Elli now has the mindset that she wants to literally kill her own daughter. Even though her daughter helped an evil man kill millions of people on all of the worlds, I could never think of anybody truly hating their child. Luckily, Bobby told her that she will try to use mother guilt to bring Nevva back to the good side of the battle for all there ever was.