In my mind, I see Kasumi's game as to get the first poke in, then launch as fast as you possibly can with either :3::3::P: or :3::F+K:. Get a good juggle in, then, if they don't tech, bait a wakeup then :9::P: over them and use BT:4::P:, juggle them and do the same, but shake up your method here...