Devotion (Thorin/OC)

She goes by many names; the fearless one...blood runner...chain breaker. She has lived through many things. She had seen many faces. But will any of this help her when Gandalf seeks her help in a quest. She constantly struggles to contain the beast within her, and with her nerves constantly on edge, she may not be able to keep the creature caged for long. Will she be able to keep her identity from the company? And if she can't, what will happen if they find out..,if Thorin finds out?...