Seldom seen, she prefers to hole up in her kingdom and jealously guard her treasures. She thinks herself a queen, but in reality she's more a spoiled princess with no subjects to protest (her daydreams humor her). She only leaves to add to her collection, leaving her daydreams (and a wide variety of traps, of course) to protect her trove. 

Winning her over isn't particluarly difficult; just prepare a gift, preferably expensive, and layer on the praise. She loves all those who pamper her daydreams- they are the only things she treasures more than, well, treasure.

Steal from her, and she will waste no time nor resources to find the culprit and wring every last penny from them. 

She hasn't noticed yet, but someone has replaced all her golden bars with toffee...