Lunara

Lunaria is the Goddess of the Moon and protector of Twilight.
Silver is deeply tied to Lunara, as she is the Silver Lining of all things. Silver was a gift from Lunara, a thread from the heavens woven into a beautiful metal. This is also why many creatures of the night, like werewolves, may sucumb to silver, because it connects them back to Lunara, and their weaker "normal" selves.