Yeah. I mean she was in a lab for the first 12 yrs of her life, then in NYX for however long with some other kids growing up, then finally made her way to the company of the likes of the x-men. She had to be AT LEAST 15 by that point (unless they specify her age in-comic?). Most artists get away with whatever because her aging is also retarded so you can be all like, she's gunna be 12 for 100 years. I just like the idea that she's similar in physical age to Daken, since they are to carry on Wolverine's bloodline when this year's out (though obviously they can't get together that'd be weird).