Mirelle understood that Leonard's condition might sound harsh on the surface. But the condition was in fact, a very merciful action.
Anyone who dared to assassinate royalty was destined to be subjected to insane torturous methods and implications toward those close to them.
Even a slight interaction could land them into many troubles and possibly death.
By that logic, Mirelle herself should have been undergoing torturous interrogation for saving the assassin when the latter was near death.
But instead of that, she was only being kept watched and remained safe from any punishment.
While Mirelle was stuck in a dilemma, the assassin sneered at the cost of coughing out blood. "Want to enslave me? You can dream on! I would rather die than become your salve."
"Alright then, bite your tongue and die." Leonard was unfazed and encouraged to end her life.