This Lucina needs some anti-air training. I mean, I jumped around her, and she used dash attack, but missed all of them. Lucina's Side Smash is nice against cross jumping into her, and Up smash if the opponent is outside of the arena. She also needs to deal with projectiles. A good idea is to sidestep or jump-dodge (needs right timing), then use Down Smash, Front Air or Counter Special when near.