To hit: 15-2=13 (hit)
To damage: 5+4=9

Asuna was just minding her own business, she was trying and testing the "Hardcore" mode of SAO 2.0, which disabled your HUD , the pain levels were set to 100% (she wanted to feel what Kirito felt) and, if you got killed inside the game, your character would be deleted.

While traveling and leveling up, she heard a scream and turned just in time to parry the attack, but the force and speed sent her tumbling backwards, so she tried to keep her balance but her long cape made her trip and she recieved a slash as a compensation.

She immediatly felt the pain on her thigh and a new coldness sorrounding it, she dared to look down and her thigh was oozing blood and her skirt was cut, showing a bit of her underwear.

Hopefully, the "Hardcore" mode prevented your limbs to stop working (unless cut), and albeit with a lot of pain, she managed to get up and braced herself for the fight.

When she heard another frantic running she slashed behind her and ducking, and a splatter of blood confirmed she made a cut on Raphael's left arm, not as deep as hers, but enough to do a bit of damage.