You were Rose's younger sister and your father Deathstroke had tasked Rose to train you, so you can fight by his side. So the fight went not well. You tried to hit her in the face but she dodged it and she tackled you to the ground, she put her foot to you chest and looked at you. "You're weak, next time don't go for the face." She helped you stand up. "Our father would be disappointed if he saw you." She said as she picked the weapons from the ground.