Murana is a victim at the core. Her upbringing and abuse made her into the merciless vigilante she is today. She brutally chases down and burns alive criminals because that is all she knows how to do to demonstrate her rage and anger at the mistreatment she received as a cub. Her younger brother being burned alive in front of her when she was a little girl scarred her to the point where she feels she needs to inflict that type of pain and suffering on those who hurt other small cubs. She is relentless in her pursuit and lacks any empathy when up face to face with her vile prey. When she finally has you in her sights and she knows you've got nowhere to run except burn up in the fires of painful justice, she can get a bit cocky. Confident, even. It's not unheard of where a bit of her sadistic side comes out and she ends up playing with her target, toying with them, knowing they're going to die soon anyway. When this devilish grin plays across her face, one thing is for sure, she's going to enjoy what comes next.
