When some one pushes Caragh to her limits she takes on a form very similar to fallen angels, and becomes just as power as her. this form is normaly triggered when some one hurts her kids or kills them, heck its even triggered when she is near death or when she is under high levels of stress. how she achieved this form is privet.
Music link https://www.youtube.com/watch?v=a8-RcaqC4nw&t=6s Yes im a sonic fan