I'd say she isn't, and I have very little tolerance for Mary Sues, so that should say something. Obviously the way she's used in the story has some effect as well, but the basic bio seems to be safe. To be perfectly honest, I was bracing myself for the usual "Personality: Fierce, cold, impersonal, ruthless, but very tender and caring with those she loves." For me, that's an automatic Mary Sue. A character doesn't have to be completely one-sided, but the only way to achieve two such extreme sides to a personality would be bipolarity or schizophrenia. So...yeah. Thank you, thank you, thank you for not doing that. Extra brownie points from me.
