It was a quiet night in Athens when baby Talitha was born in 700BC. Everything was normal, at least everything except the fact that the Aurora Borealis was dancing in the skies and shooting stars and meteors wouldn't stop flying. As time went past it became clear that Talitha was different from other children. She aged much slower with each year barely aging her more than 1/10th of a month. This caused suspicions. Her mother was made to bring up the child alone and it's father was unknown causing many, including her mother, that she must have been an extremely powerful demigod or actually a goddess herself.
Her mother got married and had another child, the child grew up healthy and normal and after their mother's death he began to look after her. He grew up but there was something strange about him as well but being the almost 6 month year old she was she couldn't sense it. He ended up "dying" by falling into an active volcano (OOC: He tried and I'll finish this EVENTUALLY <.<)
She's very quiet and tends to keep to herself a lot. WIP
Limited Precognition: She can see into the future using "stars" and the zodiac but it's not 100% accurate as she can only see into the direct future (eg. people could change their minds etc.). It's also the only time she can actually see normally.
Stellar Manipulation: Probably her most practiced and proficient super power is this and it includes controlling the energies of stars, controlling plasma, controlling the various gases which make up stars (See more applications here)
Night Empowerment: She's more powerful at night due to the fact more stars are visible rather than just the sun and their energies combined are more powerful.
Advanced Longevity: She ages as if she's moving through space at just a teenie bit below the speed of light which allows her to only age one year for every hundred years. The fact she's on earth also contributes to this. See here