Marvel was in her room studying when she felt her witch sense. It happened to her whenever danger was lurking around as it wanted her of it.
Her eyes would change colour into a rainbow then she could see what was was happening at anywhere she wanted to or where danger lurked at.
She immediately saw her parents in the church with the witch. She needed to know what the witch had to say and who she was but she didn't want her to say it in front of humans and let alone, the priest and her father.
Anyone who knew about her existence she would kill them and she didn't mind killing the priest but she minded killing her own parents.
Marvel went downstairs and met Nicholas sleeping while a football match was on. Her eyes switched to red as she exchanged her life with Nicholas.
She made them to become as they were before, freeing him from her hold and draining away the memory he had of playing her part, making it seem like such didn't happen and he was just himself.