This was decision Cane had made. He knew what he could take or not. He would rather to shoulder it alone than to see Iris became someone he was barely able to recognize.
If he had to be hurt, so be it. At the very least, he still could find comfort in her smile… oblivion was a bliss and he wanted her to have it when he couldn't.
"Okay…" Iris lifted her head, she raised her hand and touched his cheek. Cane closed his eyes and tilted his head to kiss her palm. "Is there something else I can help you with?"
She became her former self again, the person that wanted to help Cane with whatever she could, but too afraid to face her own demon.
Therefore, when Cane told her that she didn't need to remember, somehow, she felt glad. A tiny part of her heart was relief, albeit the nagging feeling still plagued her mind.