Erin experiences pain and sensory distortion whenever a person near her lies. Originally she could only detect deliberate lies, but by now it doesn't matter if the person knows they're lying or not; if the fact is untrue, then she will begin fitting. The reaction is very strong, and was very painful and almost fatal for her until she had it weakened using ability manipulation. She's also learned that she can detect subtle detection when there's no uttered lie, since she experiences a tingling sensation throughout her body when this occurs, and when her ability is strengthened she can force others to speak the truth regardless of their own intentions. Her ability makes it impossible for her to lie herself, or even to speak sarcastically, since she would find herself fitting, choking and una