I've been reading Jane Eyre online and listening to the Lord of the Rings soundtrack on headphones. I've had an epiphany. I know why Elari is important. More than just a foil for LedÈa's character. I just have to write through the scene where Precentice proves she can wield magic (for the elves, who've never had a wizard among them).
Elari is her own person. She has her own duty. That first duty will require a knife.