One of the trademark duties of a voodoo priest/priestess is to serve the whims of spirits. One common way of doing such a task is fulfilling the last wishes of the recently departed.
Here, on Hallows' Eve, the spirits of children unfortunate enough to pass near the holiday are known to desire a guide back to the realm of the living for just long enough to trick or treat one last time...
Deceased or otherwise brats will be brats as Sonya experiences for herself.
It's standard fare for one in her discipline of magic; akin to a standardized test for a student or a mandatory refresher course for certain professions.
It's standard fare for one in her discipline of magic; akin to a standardized test for a student or