Daughter of an actual dragon, Ariana was raised in relative solitude, most her social interactions coming from her mother, who taught her how to be strong and prideful, to intimidate and hurt and kill, to breathe fire and burn those who opposed her, before sending her out against the enemies that opposed her mother.
She did so proudly and eagerly, her natural draconic instincts guiding her lust for violence and terror, but her human half always rebelled against it, when she saw the fear in other people's faces, the cries of pain and anguish of innocents burning to death, the hatred those around her in human civilization genuinely harbored for her because of her actions.
She left home after a while, unsure of what to do with herself and with her draconic desires. She still doesn't entirely know what to do even now.