I'm pretty disappointed with the way Rio is shown/portrayed, so I filled in what was missing. All of the scars and emotional trauma. Hope it's not too bad!
Rio hated taking her clothes off. What lied beneath was certainly not the beautiful girl she used to be. As she removed each layer, she could feel herself reaching closer to the beast of a body that still remained, slowly removing her mask and her pretty girl façade. Every bump and every faded mark repulsed her as she sat alone in her room each night. Without even touching them, she could feel the scars that covered her body. They burned as if they were still fresh wounds. For each one, she could still feel the flame that engraved its mark in her soft flesh, making sure that she would never forget them.
"The makeup covers it beautifully," Ryoga always reassured her. Yet, behind his soft, comforting eyes, she could never truly believe him. He had to be lying; how could anything like that ever go unnoticed?
Her thoughts endlessly haunted her, causing her to toss and turn each night. She flinched as a finger brushed against bare skin. The voices in her head only grew louder. On the nights where she was able to fall asleep, she was plagued by the awful, twisted versions of her memories that could barely be described as nightmares. She always stood in the dark street with her feet glued to the ground. Rendered completely helpless, she couldn't lift her hands to shield herself as the flames came. As if straight from hell, they engulfed her helpless body with the merciless laughter of him forever in the background. She felt her body melt away into nothingness – a thing that she could have only hoped for – as her horrified screams remained unheard. As she woke each time, her whole body shook with the echoes of his laughter still fresh in her mind.
Somewhere deep in her mind, she knew that there was little truth to the way her mind replayed the accident each night, but she pushed the thought aside. They felt too real for just a dream, and sometimes they seemed far more accurate than what actually happened – a thought that she often tried to remove from her memories. Deep within her, she knew she saw the horrified expression on his face as the flames arose, and as she numbly faded into unconsciousness, she could feel what could only be his arms wrapping around her. She chose to ignore it. After all, he did this to her, and there was no denying it. In that one moment, he took everything away from her. He took her skin, her hair, her eyesight, and above all else, he killed the girl she once was. Any amount of life she once felt inside of her was gone. She felt dead.
She couldn't find it in herself to cry about it anymore. No amount of tears would heal her flesh, and after what seemed like ages of crying, she found that she had cried her last tear. She had accepted her cruel fate. She closed her eyes and let out a long breath of air as she tried to stop her body from shivering. Only one thought continued to course through her brain.
She would never be normal again.