In the other, Caroline and Pierre moves to Pelican Town shortly after marriage. While exploring the valley to get to know the neighbors, Caroline chances upon the wizard's tower, meets him and they start a relationship, culminating in them sleeping together once (the "it's unusual but it's been known to happen"), then breaks up with her hoping to avoid his wife finding out. The witch finds out anyway, divorces him, turns green with envy and rage and flies around trying to exact revenge. (the shrine in the shop may have protected Caroline and kept her from getting identified). Abigail gets born, and Caroline wants to keep Pierre from suspecting that he might not be the biological father. It takes 18-20+ years before the wizard realizes his magic ink is missing.
I can totally see this one being it