Wolves and Magic

This is about four teens all best friends the two brothers castiel, Jace and two sisters Ava and Avril Ava is only 14 and Castiel is 15 where as Avril and Jace are 17 Castiel and Jace are shape-shifters into wolves and so is Avril both the brothers and sisters families bloodlines are filled with shapeshifter blood but no one told Ava this in fact no one told her their was any such thing as powers or magic until one day she sees Avril shift into her wolf form everyone then has to explain everything to Ava and teach her about her skills but that soon proves difficult when they find out she cant shift but has a different unknown power it also makes difficult when the two brothers have secrets that the two sisters dont know about.