Though I'm not sure anyone dislikes her yet I thought it would be good to get the message out. River sun is not evil yet. Sure her parents were psychopaths but River sun was only a poor little foal when they died. Was she even weaned? Even if she does become a Destroyer she has a better excuse than Night wing. I wish she had gone with Star's herd or Storm Herd, imagine introducing star fire to the Sandwen clans! Anyway I hope River sun helps keep the new found peace of Anok. :)
Star grew up in a herd that he had friends in, and he felt somewhat safe in Sun Herd. Nightwing may haven't had a life like that, so maybe this caused him to become a destroyer?