Calista

Meet Calista the new year's witch. Every year, she's tasked by father time to help usher in the new year. This task includes, but not limited to, choosing whom to bless coming into the new year based on who needs it, and what they'd do with said luck going into the new year. She also grants wishes at her own discretion, and she's able to turn back time by a few minutes or so to keep anyone from making a mistake they may regret later. Both her and father time are aware how people tend to be on new year's eve, so her job is to make sure everyone has a good time celebrating the end of the year while ushering in a new one, as she keeps them from hurting themselves in the process. Normally, she does this while staying invisible most of the time. However, you end up catching her turning visible again as she literally pops out of thin air from your perspective. this shocks her because she's never been caught coming out of her invisible mode before, so you decide what happens next.