Unsatisfied with the conditions, Nana had run away at a young age and grew up in the back streets of Oak. She had done many things to survive. Lie, steal, murder. It was easy to get away with such things while being a child- humans were mostly compassionate but also willing to turn a blind eye to many unspeakable evils. Such as a troubled homeless child in the streets.
In any case, things had worked out for Nana in the long run. Her experience on the streets had taught her to be shrewd and callous. Yes she missed her parents sometimes. She still thought of the fuzzy memories she had with them. Her mother's warmth and her father's sense of reliability. Her memories always ended with the death of her mother however, followed by the enraged father who abandoned all sensibility in the pursuit of vengeance... even abandoning his own flesh and blood.
Deep down, Nana knew why he had abandoned her, but it was still difficult to accept. That was precisely why she was about the outskirts of Oak today. Some old memories had been stirred and nothing would settle them until she had reached the bottom to the cause.