Delilah has black hair that sits upon her shoulders. It is naturally straight. She has blue eyes, a relatively average-sized nose, and average lips. Standing at a height of 140 cm, or 4.5 feet, she is a bit shorter than her same-aged counterparts. Her outfit choices are typically comfort-related, with her favorite pajamas being a teddy bear onesie, and her favorite outfit being a frilly cream dress that ruffles as she runs around.

Delilah is a very bubbly character. She is often smiling for no apparent reason and is rarely seen to be upset. While she is consistently in a good mood, she is quite intelligent for her age, though not to the point of being a child prodigy. She understands empathy quite well for her age and is very willing to be around her friends.

Born in the bustling city of London, Delilah was given birth by two loving parents. Her father was a math professor while her mother ran a cafe/bouquet shop. As a child, she went to a muggle standard public education facility, in which almost all of her education to date was acquired. Most of her free time outside of school was spent in the shop staring at the flowers, or by drinking hot chocolate during the frequent rainy days. Many of her muggle friends did not believe in magic and thought that Delilah was quite eccentric, if not a tad delusional.

Her first case of magic was quite shocking. She was about seven at the time, her eighth birthday approaching. It was a rainy evening in London and Delilah was sitting by the window in her mother's shop. A small bunch of flowers were beginning to wilt due to the poor weather. Delilah felt bad, so she sat next to it. By holding the pot, the flowers began to straighten out and bloom once more. Delilah screeched in excitement and tried to tell her mother after she came back from the staff room, but she did not believe her.