I agree Misija is spiteful and hateful - which is why it makes no sense that she didn't temper Bajsaljien and Marsak right away, which wrecks the consistency in-story.

However, after CLL, she's supervised by Lyon at least - plus she's back in a military setting. Neither of those are conducive to her being able to act out her revenge fantasies, especially since the IVth is starved for resources.