Mode of inheritance of the rapid aging disorder

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Mode of inheritance of the rapid aging disorder

The Young and the Restless (soap opera) has a couple people that suffer from a rapid aging syndrome that involved a young child that is sent off to boarding school and returns 3 months as an teenager. Victimes have been known to age up to two decades in variations of this disorder. In the newman family, siblings nicholas and victoria aged. Their parents are not affected to age quickly at all.

a. What is the mode of inheritence of the rapid aging disorder affecting Nicholas and Victoria?
b. How do you know what the mode of inheritance is?
c. What would a newman family pedigree look like?