Nah, it's all metaphorical. She's been burned by fire (or something similarly dangerous) once -- or had to make a serious sacrifice --  and knows just how powerful control of fire and strength based on sacrifice can be.<br/><br/>I haven't really looked at the bond mechanics yet -- I thought they were mostly just interpersonal character fluff. But if it's a matter when to draw upon that ... maybe when faced with serious threat/odds and it's only her and Nuria, to reassure them that they will each stand strong, no matter what? Dunno.