A ninja... Well. Well damn XD
Right. First off, is she affiliated with any group? Most of our characters are with Garden, but we've got one with the Galbadian Army at the moment. An independent character could work, but it'll be very hard to thread her in at this point. And the GF abilities section refers to the kind if abilities seen in the game, so stuff like refining magic from items and special abilities. Junctioning is a GF's ability to... uh.... 'equip' magic to a character to boost their stats, so that section would be things like Strength, Speed etc.