Ruby, unfortunately, had to return home.
She really wanted to stay at the Tower and witness what kind of masterpiece Adrian built in the assessment round.
She has seen the armament he built for that redhead teacher in the academy. She was roaming around that area, that day and accidentally witnessed the woman creating a huge whirlpool.
She further investigated the matter and found that the woman, Norma was actually a failed Warden. Her element was too weak for her to continue as a hunter. As such she retired early.
Then what about that attack? That spell definitely didn't belong to a failed Warden.
Later, upon meeting Norma, and manipulating her a little, she exposed the truth.
It was the runes that gave her the wings to explore her full potential.
She mentioned something about having 'hybrid-affinity' which the Runesmith mentioned.
