Alex had a dream, no it was more like flashbacks; in these flashbacks, he saw the girl's childhood memories resembling the mysterious woman they were fighting against.
She was born with a frail body, which made her unable to have a normal childhood. She was always stuck inside her room; her mother died giving birth to her, so she lacked motherly love; however, her father was present, always looking for her until that fateful day. Maybe it was because usually, she doesn't go out; they thought it was safe to talk in the room next to her room. That day she just wanted to head to the garden and surprise her father because today happened to be his birthday.
However, just as she dragged her frail body out of her room after dismissing her maids, she overhead a conversation between her father and the old men from the council.