Asuna used her fast speed to circle around Jubelana, she knew she wasn't a match of Jubelana in strength and frontal attacks won't really work. After all Jubelana was a profound beast whose physical strength was of a Ruler Profound Stage Profound beast.
That's why she was using her wind element and body which had been enhanced like a body of a wolf.
There was also the poison of Jubelana, Asuna wasn't sure she would be able to survive that. After all she had never been really injected with poison of such a powerhouse.
She wasn't sure whether her body would be able to handle the terrible poison and who knows if Jubelana had even more powerful and poisonous poison. After all she was a serpentine Profound beasts so she had almost limitless supply of poison.
She had some advantage which she was using against Jubelana, especially her speed. If you can't even touch a person how would you be able to harm them?
