Updated from this
I CAN SPOIL IT NOW (88
She's an half orc-human, her mother was an young woman who wanted peace between orcs and humans. Then in a field, outside the small town, the mother met Risza father who was an orc. A year later Risza was born and the peace has been settled but it still existed hatred against the orcs. A gang of people gathered to murder Riszas mother for thinking her having a kid from an orc is only betrayal. Risza witnessed everything and the gang just told her repeatedly that everything happen because of her, because she's an orc. They then took her to a shed and cut her pointy ears and after that they started to file down the teeth but got interrupted in the middle of the process.
So that's why one of her teeth is still pressing against the lips and her ears seems weird. Also Risza is constantly says she's only a human because the words "Is your fault for being an orc" haunts her everyday.