Hello Rachael,
Language is messy. It defies formalization. most of the words we use regularly have been bent beaten and broken through many generations until they became accepted and regularly used. I'm talking about words in general.
Most words and meanings go through a very rigorous trial before coming into general use. At some point, a set of pronouns will "magically" become accepted and used more to the point of "triumphing" over less used or less malleable alternatives. It will be some time, however, and there really is no controlling it.
At one time, our people were accepted and respected. Like Doc said, there were words for us then. It would be nice to dig up the old lingo and squeeze some more juice out of it, but there's no way to make it happen in an official way.
It is a difficult thing to recover culture and traditions that have been destroyed, buried, hidden, and ridicule by a particularly mean majority. Binaries who accept us, or who would accept us if they knew of us, have no more access to our past than we do at this time.
Just because we struggle with our own identity there is no reason for us to not be taken seriously.
Rebis from the Rubicon