I also like how she is quite long in terms of the proportions of her legs and arms but quite a small character. This once again makes me think of the anatomy of a monkey (aka band Gorillaz)
The first thing that comes to mind when I think about Pocahontas is "Noodle" from the band Gorillaz. She is silent and layed back about everything, with the slight appearance of a monkey. I don't want my character based on a already made character but baring this in mind, I think Noodle is a very well fitting character to what the brief gives so at least I have a starting point.