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  She genuinely made someone cry when she said, "I wanted to try to have a relationship with you" in response to someone asking her if she lied about wanting to be with them. Even she admits this was a terrible thing to say.
She genuinely does not see a need to have a romantic relationship, and remarks how deep down she knows she's callous. Which makes me wonder if she's a asexual or a sociopath? I'm pretty sure it neither on account of her love for Gundam fan-fiction and rewatching Escaflowne and Record of Lodoss War.