What was it supposed to be? In game, the characters actions seem random & beligerent, but in the book she says she wants to secure the Horde's hold over Kalimdor. Everyone, including the story itself is playing up how monsterous she is but everything she's doing seems totally rational.
Destroying her own capital to cover her people's escape
Conspiring with the Alliance is treason
Killing Jaina like she did to the Sunreavers
Saurfang being suicidal....what is she supposed to do about that?