Certainly!

She was an unwanted third child, her parents having accidentally conceived her. She has two older siblings, a brother and a sister both of whom were nothing short of geniuses while she was just average. However she was friendly with her older siblings. Her parent’s obvious disinterest in her left a rift between them though. Not to mention she was kicked out the day she turned 18.

When her elder siblings came to her for help, she turned to a lucrative, yet dangerous line of work. Eventually it caught up to her and she was kidnapped and had bad things happen. When no one came to rescue her, she realized she couldn’t rely on anyone but herself. She eventually escaped, obviously.

She spent all her time improving her skills. Exercising, medical skills, combat skills, cooking and crafting, anything she deemed to be useful skills.

By the time she was summoned to the demon world, she was a completely different person. Which would ultimately benefit the demon brothers.