Yuyui had never stopped thinking about Ferex. She blamed herself. She thought that if she were a more competent fighter, she might have been able to prevent Ferex from succumbing to his Flaw. They had both been weak back then, and Yuyui felt that only Ferex paid for it, and now Stylla.
Identity crisis had been Yuyui's greatest enemy since she was freed from the Temple of Unlusted Tears. She had struggled with getting to appreciate the norms of society, balancing her tremendous appetite, and of course, understanding what her moral compass was supposed to be.
After the incident at the temple in Genhuis, where she killed a Grand Priest, her mind had been clogged, only to get clogged further when she lost Ferex…or rather, when she ran away.
This was what had kept her from growing.
The thought of that…thing, which she had fled after seeing what it could do from being here, of it being her opponent, was immensely harrowing.