Why hasn't Omakayas told anyone of her experiences with the bears?

I don't think that Omakayas thinks people would believe her about talking to bears. She finally trusts in her grandmother. Omakayas talks with her grandmother about her experience with the bears and discusses her grandmother's use of herbs as medicines. Her grandmother tells her to trust her instincts about both plants and animals. Meanwhile, Omakayas' father and his friends discuss the increasing presence and influence of the white man and consider the possibility of moving west.