“What?” he asked in a low voice.“You looked like you spent your last joy bill.”He hissed, “What does that even mean?”“I don’t know. I was just trying it out.”“Well, it doesn’t work. It doesn’t make sense. And anyway, I’ve got plenty of joy bills. Loads.”Helen said, “What’s happening there on your phone?”“A very small joy debit.”His older sister’s smile shone brightly. “You see, it does work. Now, did you or did you not need to get out of that room?”Gansey inclined his head in slight acknowledgment. Gansey siblings knew each other well.“You’re so welcome,” Helen said. “Let me know if you need me to write a joy check.”“I really don’t think it works.”