The Other Aunt (A Harry Potter fanfiction)

What if Lily Evans had another sister? What if that sister was a marauder and an animagus? What if she married Remus? And what if she found out Harry was alive when he was in second year and got him from the Dursleys and became a Professor at Hogwarts? *I do not own Harry Potter!* (WARNING: I will not be crossposting...