It all just happened in a past lifetime. Once when Vivian was just around eight years old. On earth, she was orphaned, she didn't experience having a normal family. The old lady, who was the head of the orphanage, told her that some people in the church near them brought her to this place. They heard a baby crying under one of the chairs in the church, and the people found her there.
The people who found her concluded that she was abandoned by her own parents. But since they didn't have the luxury to take care of her, they brought her to the orphanage right away. Since they know that they don't have the ability to take all the responsibilities to give her the basic needs. Either way, the old lady told Vivian that she must be grateful for it after all because they didn't kill her.
