Euphyllia
Euphyllia is a duke's daughter who found herself in an awkward spot when the crown prince publicly called off their engagement. Rather than fade into obscurity, she was taken in by Anisphia and became her research assistant—a move that turned out to be pretty fortunate for everyone involved.
What makes Euphyllia genuinely exceptional is her rare gift: she's blessed by the spirits themselves and can attune to magical spirits of any element. This universal affinity is uncommon enough that it basically lets her tap into magic in ways most mages can't, switching between elements as the situation demands. For a researcher like Anisphia, having someone with that kind of versatility around is invaluable.
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