Something that I've been thinking about...
So we all know that when Grace died at the tree of souls that her spirit went into Eywa, But what about Trudy? Even though she was on the wrong side (at the beginning) she did make the right choices when it counted. Such as not participating in the destruction of Home Tree, and helping to break Grace, Jake, and Norm out of that jail cell. I think that those decisions showed that her heart was always in the right place, and that deep down she appreciates Pandora for what it was kinda like Grace.
So the question is, is Trudy now with Eywa and Grace? She did die fighting for Pandora so I would like to think yes. When I think about it, Trudy showing up may have been the turning point for Eywa. And at that point the fight got a little more even