The story
He tore her dead mother's necklace off for her sister.
Cassian rejects her at her own Mate Claim Ceremony and takes Maris by the hand, saying he only means to save her from the Council. Then he reaches for the moonstone necklace so Maris can wear it as his chosen Luna, and the chain breaks, along with the last reason to wait for him. In three days the Council sends her to Rowan Vale, the Lycan king's dying heir, and everyone pities her for it. Rowan is the first man who asks whether she is choosing him freely.