Bluebelle's second quest is Asking the Oracle. Buy an Alchemist from the Marketplace, get 9 fairy vials from Bluebelle's house in the Fairy Realm and make 2 dragonwing potions (2 dragonwing pod, 1 fairy vial, 3 min) at the Alchemist.
This second part of the Asking the Oracle quest is a good one to do along with Making Scents and the On the Scent quest by Magnus. Buy a bed of wild roses and a bed of jasmine from the Marketplace and expand to the land that contains the Butterfly Oracle.
Thirdly, Bluebelle needs to make a visit to the oracle to ask a question. Use the Perfumer to make 2 rose perfumes and 2 jasmine perfumes, then visit the oracle with Bluebelle as one of the hero explorers.