Mistake
While Quinlan was busy getting tended to, or more accurately, pampered to oblivion by his lovers, Iris was in the middle of conducting the harshest duel of her life.
Similarly to Quinlan, when she signed up for the challenge she wasn't making a very well-informed decision, it was more so her extreme ambition flaring in her chest.
The scum who tortured and killed Damian, her elder brother who gave his life in exchange for hers back when they were little children, was still alive. Any second he spent breathing was a second Iris hated from the bottom of her heart.
She was in a rush to bring his reign to a miserable end, and she thought that gaining lots of experience from this woman called Azura would be the smartest choice she could make given the circumstances.
That seemed to be a mistake.