Eren watched the scene unfold calmly. Estelina had forcefully brought him here and now she was forcing him to fight? He didn't want to play according to her rules so he created his own rules.
She was the host and he was a guest. He simply made her fulfill her responsibility of being a good host. He pretended to not understand why she was so upset as she was tossed up in the sky.
Estelina saw the Sky Sword falling over her. Or rather, she was tossed at the sword like a toy. With the sword this close, she couldn't dodge it even if she wanted to.
She controlled her body which started glowing with a radiant light while she summoned her own spiritual energy, creating a spiritual sword in her hand.
She swung the spiritual sword which appeared like a child's sword in front of the sky sword. But despite the appearance, her sword managed to cut the Sky Sword in two halves.
