You never died

So technically, you are the “first” daughter/son of Jake sully and neytiri but one day when in the forest exploring with your brothers and sisters and aggressive thanator attacked and you fought it off and badly injured, your brothers and sisters went to find your parents but they didn’t find your body, figured thanators took you with them but you weren’t dead at all- you found by general ardmore, you fell unconscious and woke in RDA base. with injuries so fatal you lost memory- or at least everything was foggy. Have no past memory of life with your family, forest and all you knew was the rda, you grew to be the face of the rda. Now years pass, when on a mission to get Jake sully and they see their dead daughter/sister.