In that case: she knew when she awakened next morning that it should have killed him. If she had known that the night before, then after disabling Draco with the charm, she should alerted a teacher, or maybe woken him up and stunned him the usual way. If she didn’t do any of that, she was knowingly leaving him to die.
In that case: she knew when she awakened next morning that it should have killed him. If she had known that the night before, then after disabling Draco with the charm, she should alerted a teacher, or maybe woken him up and stunned him the usual way. If she didn’t do any of that, she was knowingly leaving him to die.