I'm trying to see if my character is a Mary Sue. Though she has come to me pretty naturally thus far, I'm getting worried that some people may think she is a Mary Sue due to her backstory and abilities. (My main character is names Kai) Basically in my books werewolves and magic users, called practitioners (witches=female, wizards=male), exist and is set in an alternative reality in America, primarily New England. The werewolves are thought to have been wiped out by a genocide/war that occurred a couple hundred years ago, but a handful still live in hiding, scattered across the country. There is an underground anti-werewolf organization that tracks and hunts down the remaining werewolves. Kai's family and small pack was killed by the organization but she was saved by a wizard who took her in, adopted her, and took her to live with him at the Boston Guild (a lot of practitioners group together to form covens or guilds). Kai has been leading a fairly lonely existence, since in my story werewolves don't age past maturity so Kai knows her time with the Guild is basically limited. She has them and they know her secret, but she must maintain her human facade with other people. At the beginning of the story Kai is living with the Guild, but she is trying to find other werewolves. In terms of abilities, Kai is no different than any other werewolf except for her ability to turn people via bite. This is rare with werewolves, but not so rare that Kai is the only one and the ability to do this would make her hated among human society because werewolves like her used to turn people against their will before the war. When she realizes just how badly the werewolf population has been depleted, not just by the way but the organization, she wonders whether she should turn people or not and is pressured by some werewolves she meets to do so to save their kind. She has flaws, such as hubris and having extreme difficulty trusting people. She is also overly curious, unpredictable, and can be emotionally unavailable and stubborn. But I am wondering if her having a tragic backstory and a comparatively rare ability would lump her into the Sue category. She does not have a line of men chasing and while she does have a love interest, it develops slowly over the course of the story rather than him falling in love with her at first sight or anything like that.