What film am I thinking of? I caught the beginning on TV but never saw the end. Need the title to track it down. It's from the perspective of aliens, humans (I think) invade them and start terra-forming their planet. The aliens are tiny and live in tree/plant like things. It's American not Japanese, came out after 2005, lead female character voiced by a well known actress...like Dakota Fanning or Christina Ricci or somebody...