2. Happiness I could see. It's the stones I'm a bit iffy on. Unless the people in the vault could somehow obtain one in a viable way, then I'm not sure how they would have the stones. Unless Vault Tec has just been supplying them with stones the whole time.
3. Would Victini, Meloetta, Diancie, and Hoopa not be considered as well? They're all considered Pixies too last I checked.