Disability
She is mute as a result of trauma. She screamed herself hoarse before her parents sedated her to shut her up whilst the robots were slaughtering, and after she woke up and found her family dead she never found her voice again.
Personality
She is a shy child who doesn't really know a whole lot. She is rather flighty and doesn't stick around long if there is danger. However she is fiercely loyal, and will try and return to the party if she gets separated for whatever reason.