- Get Peatrice to become flirty. See details below; note it can take a while.
- Of course, you’ll need to have finished the “Missing Sister” quest.
- Five Gratitude Crystals.
During the game, as you speak with Peatrice at the Item Check more and more, she will start to become happy and flirty with you. Basically, you’ll have to keep speaking with her until she calls you “darling” with the text in red. Whether just repeatedly talking with her actually helps, or whether you have to spread it out is unknown to me.
Eventually, once she does call you “darling”, sleep until nighttime and go to her house. It is found to the east of the Bazaar. Inside, note whether Peatrice and her father have speech bubbles above their heads; if not, speak with Peatrice, exit, and re-enter. Once they have speech bubbles, speak with Peatrice and direct the conversation however you wish. Either way, you’ll get the five Gratitude Crystals.