Although it's a motif that needs to be used sparingly, I enjoy the times when I can show the same event or interaction from different points of view. In Mother of Souls we see Serafina shopping for a small statue of Saint Mauriz to give Celeste as a parting gift. It's an expensive keepsake: more than Serafina can afford to spend and more valuable than anything else Celeste owns (though this aspect is only hinted at).