answersLogoWhite

0

In most cases, your sister's mother is also your mother, and her husband is your father.

If you and your baby sister have the same father but different mothers, your sister's mother's father is your father. If you and you sister have the same mother but different fathers, your baby sister's father is your step-father if he is married to your mother.

User Avatar

Wiki User

13y ago

What else can I help you with?