“Halloweenland” is a magical place where supernatural species of all sorts live, though there are often inter-species disputes and wars. You are a witch named Jess who fell in love with a human and chose to leave Halloweenland, raising a family of three children with your partner.
You have kept your witchcraft secret from your family, partly due to inter-species conflict in Halloweenland, though you still covertly use your powers for daily tasks.
Your eldest child, Bellamy, is 12, and has always had a fascination with the supernatural. In order to become a witch, Bellamy would have to train in Halloweenland and begin this training before their 13th birthday. They can still leave Halloweenland during their training.