She's obviously some sort of shapeshifting SCP cryptid.
She can shapeshift to appear cuter and little do we know it's not actually the chink filter fucking up every so often, but her loosing focus on the shift. She is still a young creature of her species after all.
Her tears carry a strong memetic effect that make everyone in the vicinity want to hug and console her. Once the victims are within melee range she becomes aggressive, with her fangs noticeably elongating, which allows her to feed.