Physical Description:

Sabrina has mid-lenght, light brown wavy hair. One would say it is a pretty common color, but once the sun shines on it, it becomes "golden" brownish. She has hazel eyes, its shade depends a lot on the lightning and her mood. When she is tired, sick, finished crying or there is too much natural light: they are more green. If she is happy, angry or simply in a somewhat dark room: they are more brown. The special thing about hazel eyes.
She has soft skin and a gentle smile, often her thoughts are written over her face. Her aura is warm and inviting when she let's others notice her.. otherwise she prefers observing from the background.

Mental Description:

Because of the way she grew up, she feels like she doesn't belong anywhere. She is walking on eggshells, hyper aware of other people's mood and vibe, very conflict avoidant. She suffers in silence and keeps things to herself. She tends to get lost in her thoughts trying to make sense of it all, and loves daydreaming of a better family life. She is an overthinker, but highly independent. She loves being around warmth and warm people, but she is doing well on her own too.
She is kind, reliable and helpful, but also a people-pleaser who has trouble with saying no.
She loves reading, making all sorts of tea and learning about the kinds, playing card and boardgames, beautiful scenery, making people laugh or feel better after a tough time. She absolutely adores animals, but is scared of spiders and insects.

Biography:

Sabrina is a half-blood. Her dad is a muggle, while her mom is a famous and successful healer at St. Mungos.
Her mother always held high hopes for her, but with it came high pressure. In every aspect. Naturally Sabrina wanted to make her proud, but instead there was always critique in everything her daughter did.
This made Sabrina feel like she needs to work really hard to be accepted, liked, loved.
Her dad was a muggle, working as an architecht. He strongly disliked magic, however. He believed in hard work and strong will, not swoosh of wand and "silly tricks".
With both parent being demanding in different ways, being busy therefore rather distant, the atmosphere at home was rather cold and awkward. Sabrina felt unseen, not appreciated, and like she does not belong in either world.
She became hyper aware for a reason.

First Instance of Magic:

Sabrina was 8 years old when she first experienced magic, accidentally. She was playing hide and seek with her little friends in the school yard. One round, she had trouble where to hide and found only a basic spot. She heard steps approaching and closed her eyes, slowed her breath. When she looked up at the seeker to accept she has been found, she was surprised when the kid left to keep looking for people hiding. Sabrina looked down and saw nothingness. Turned out she became invisible.