Tol-in-Gaurhoth XX: Wereorc I: The elves cannot hide themselves much longer.

[Grendelien]

Originally Posted by Nogrod

But then there is the question, why didn't she protect her last night?

Assuming Zali is the Ranger, and she really did protect Spawn the first night, Spawn cannot be protected a second night in a row. If Zali remembered this, then why would she have revealed that she protected Spawn the first night, knowing that she can't protect her the second night? It may have been because she wanted us to believe that she truly is the Ranger, and is not lying about it...or it may be because she wanted to gain our support by rescuing an innocent (Spawn), who Zali, if she were an orc, would've already known to be an innocent before the killing.