Lyka confronts her grandmother Elle for not telling the truth earlier. Elle told Lyka that she is afraid that Lyka might not accept the truth easily. The burden of being a werewolf might be hard for Lyka, more so being the savior of the werewolves.
To know the truth, Elle presented a book to Lyka, and the book can only be opened if the moon stone be placed on it. Fortunately, the other half of the moon stone from Noah was returned to Lyka, so the moon stone is whole.