The Light of the Stars (Harry Potter) (Under Editing)

For the longest time, Astra Black has been sent to the Eastside Orphanage since she was a baby. With a descent life of living in the orphanage, she has never been on a broomstick, befriended a half-giant, or helped mythical creatures from her caretaker's stories. All Astra knows is a living with the other orphans with their two caretakers.
But all of that is about to change when a mysterious letter arrives by a mysterious woman messenger: a letter with an invitation to a wonderful place she never dreamed existed. With new friends and enemies alike, her magical life at Hogwarts has just begun.
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Disclaimer: Don't worry, I'm writing this for fun. This story follows the events of Hogwarts Mystery, and the Harry Potter books/movies. But I'll make a few changes to make sure Harry has a great family.