Who is Mo'amba from Subterranean and what is their importance?

Mo'amba is an elder of the mimi'swee. Mo'amba is the elder that communicates with Ben through his dreams. Both Ben and Mo'amba are what the mimi'swee call heri'huti. Mo'amba tries to help save Ben and Ashley but eventually Mo'amba is murdered by another member of the mimi'swee.