Yeah of course not as fast as the full blooded, but still faster than a normal human should be.

Maybe she has a a marking on her that she always just considered a birthmark but in reality is one that all the asiran have? Or maybe she has some piece of jewelry not a cloaking device r another but just a normal bracelet or necklace) that could have only come from asiran that was given to her when she was born by her mother? Kind of like a piece of Cassie's other self as her mother would have called it?