Trilogy Theories.

[Woodsprite]

Originally Posted by Human No More

Doesn't even need to be like that - I think that as she is with Eywa and her avatar is still there, she could return in that body

Mmm... Well as possible as it is for Grace to still be technically "alive" and able to talk to people, I don't think she'll do it through her avatar. Because, there's only so much time before a body dies from lack of nutrition, muscular atrophy, etc. The avatar can only stay alive for so long after disuse, because I imagine the body is only capable of performing involuntary actions like breathing, digestion, heartbeat, etc. And who knows how long the time gap will be between Avatar 1 and 2.

So, yes; Grace will probably make a comeback, but not in her avatar. Her avatar would most-likely be dead by then.