that handle looks much too round, you might want to flatten it out a bit.
about her sword, because of her status as a woman, being trained in the samurai arts is even a stretch, but to think anyone would accept her to train in any other arts (especially when the chinese didn’t like the japanese too much) might be alittle too innaccurate. i would keep the sword a katana, it was easy enough in those days to pick one up off a battlefield or a dead samurai.

