Growing up, Agnes was taught two lessons in life. The first was to always be kind to everyone who deserved it. The second was to always be the meanest son of a bitch when the time required.
With these principles, she lived her life in relative peace.
Agnes was young when she lost her parents. It was at the start of the Last War, which she somehow managed to survive.
She was about eighteen when the Apocalypse happened and she managed to become an evolved. Those were trying and hard times, but they were also much less hectic than the current ones.
During those years, she had killed a lot of monsters and even quite a few fellow humans, but eventually, she decided to retire. That's when she got a job offer as the personal maid to a newborn baby.
The offer came from one of her acquaintances, but they didn't tell her who the baby belonged to.
At that point, she was already an ascended, but she was a bit reluctant to take the job.