Much thanks if anyone can help me understand the correct meaning
名状しがたい唸りを発して長い右腕をしならせ、鞭のように放つ。
Girl「ハッ!」
それを完全に見切り最少の動作でかわすと、美麗な戦姫が軽やかに舞い上がる。
(my guess is "After she had completely dodged that attack effortlessly with minimum movement, the battle princess soaring up in to the air easily like a bird" but i'm not sure, because of the 見切り最少の動作 part)