Indian Sisters

Lyra has a secret that only she and her sister Ameih know of:
She is blind. Since the tribe she is living with, banishes people with a disablement, this is a secret that must never come to surface. But as the trial of sun and moon approaches, a trial that every tribal member has to pass to get to be a full member of their tribe, the secret she and her sister had kept in secrecy for so long is bound to come to light.
All of a sudden their friends turn to foes and foes to friends. But who can they really trust?

(You can find the German version on the account Pinnwand.)