Araya, of Sudanese descent, was raised in London. Her father is a greengrocer and her mother passed away several years ago. Araya, strikingly beautiful in an unusual way, became a model, but she's too smart for it, and is bored, even though she's been rather successful. She's naturally atheletic which means she is careless about what she eats. She can be rather omnivorous, craving excitement and adventures, so she also likes boys and girls.
Becoming a companion to not one but two Timelords is right up her alley.