Legend of Zelda: Twilight Princess HD - Boss: Twilit Ice Mass Blizzeta

The yeti leads you to the bedroom where the Mirror Shard is kept. However, the shard possesses her, and she turns into the boss, Blizzeta.
Firstly, use the Ball & Chain multiple times to shatter the protective layer of ice around the boss. Once she flies into the air, pay attention to the reflection on the floor, and run away at full speed (the ice makes this difficult) to avoid her attack; she will slam ten pieces of ice down, so after the tenth one falls, immediately turn around and use the Ball & Chain to shatter it. She will then fall again, so try to stand in the area where the ice is missing (the one you shattered). Hit her with the ball once more, and repeat two more times to end the battle.
You obtain the mirror shard, and the yeti returns to normal.