Year 1855: Lydia was born from the unexpected recognition of Celith (a wanted warlock) and Sheldon (a knight). Carrying her to term was a hardship for Celith, who was desperate to keep her child far from Melchior's grasp. As a result, she had to call in a favor from Balor to make her a cover story for the nine months.
Once the child was born, Celith left her in Sheldon's care but was granted secret visitations with the girl now and then. As a result, Lydia grew up aware of only two things about her mother: 1) Her mother was sad and needed to have a reason to smile. 2) Melchior was the reason she was sad.
Lydia could not stop Melchior but she could get her parents to smile. So she began to goof off and act up to make them chuckle - even at her expense. As a result, she grew into being quite the loud and audacious personality.
Year 1859: Lydia is sent to Legacy Institute thanks to her father's money. While not the only child of a knight who was not a noble, often her kind were looked down on as lessers by the other students. She never let it bother her, always eager to tell them off or prove them wrong. Her boisterous personality caught the attention of two boys her age: Zayne and Destan. Zayne was a distant cousin she'd only just become acquainted with but he loved trouble just about as much as her so they were fast friends. Destan seemed boring at first, but he quickly turned into their keeper and getting him into trouble along with them was rewarding - especially when his boring facade cracked and he started laughing it up with them.