Mystery of The nine realm (book one)

I'm only starting his story to see what I can do. Basically, I'm seeing if this story can have feedback.

Andromeda wasn't an idiot! She knew she's living in a lie. But she never pushed her elder brother Sirius. The youngest sibling of three brothers and a dead older sister. She lived in a small town with a hate and love relationship, one day she was attacked by a vampire, learning from that, her life was more than she expected. More than the lie she knows she was in.

𒊹︎𒊹︎𒊹︎𒊹︎

Andromeda lived with her three older brothers. Fourteen-year-old girl, she learned she was one of the missing royal children of the kingdom Obsidian, in one of the nine realms.
Now as a renewed king, her elder brother Sirius unable to refuse the offer to return the world he had left long ago, Andromeda forced to accustomed her new life. Learning the mysteries of the nine realms as the dark war started to approach.
She explores the nine realms slowly. Her brother, a kind ordered her to go on a diplomatic mission, in order to stop the war and causing the Earth's demise. But with that, she needs to know the diplomatic way of interacting with people.