Margie is Bart's first cousin and reigning Mother of Nisan. Her parents (Elvira and Francis Fatima, Holy Mother and Bishop respectively) were murdered in Shakhan's quest for the Fatima Jasper, and Margie was forced to take her mother's place at the tender age of ten. Although she acts childish, she's a brave and responsible girl who fits the office of Holy Mother very well, even at such a young age.
Height: 158 cm
Clothing size: small
Shoe size: 22.5cm
Ring size: 8
The game doesn't go into her childhood much. During the coup Margie and Bart were both imprisoned and interrogated by Shakhan, but they displayed amazingly strong will for children, and never gave in to him. (I guess it runs in the family.) Maison saved both of them, and Margie was returned to Nisan. She leaves again later and Shakhan captures her again, but Bart plays the part of Knight in Shining Armor and saves her.
Bart and Margie are the victims of an arranged marriage. This seems to gross people out, but I'll have you all know that incest was a common practice wtih the royal families of Europe. ^.^ It's the easiest way to keep the bloodline pure, and in a family that has to preserve their retinal pattern of all things, it's understandable. These two are also the last living descendants of their line, so it's not like they have much choice in the matter. At least Bart is around her age - imagine if the decided to marry her off to Sigurd!
For those that missed the boat: the Fatima Jasper is their retinal pattern, hence the importance of preserving it.