We’ve moved on from the Major Arcana to the minor Arcana — the first suit is the suit of Rings, which takes the place of the suit of Pentacles. The Three of Rings shows Cristina and Jaime Rosales from The Dark Artifices. Cassandra Jean has included Cristina’s pendant and Jaime’s crossbow, and the rose-pattern ring of the Rosales family.
Jamie and Cristina are not brother and sister. Interestingly, the Four of Pentacles is a card that can be about fear of love: losing it, or getting it. :)