The half sister of Harry.

What if James came up with an idea for Lily to carry and give birth to Remus kid through Magical Surrogacy. What if Remus and Lily had a daughter, James even gave the child his last name because he helped raise her because the full moon. Remus Rasied His little girl Sage. She was raised with the Wealsey sense her father turned into a wolf every month. This is the story of Sagelyn Lilian Potter-Lupin an her life.