She might even be your lovely school-teacher who is reading these words to you at this very moment. Look carefully at that teacher. Perhaps she is smiling at the absurdity of such a suggestion. Don't let that put you off. It could be part of cleverness.I am not, of course, telling you for one second that your teacher actually is a witch. All I am saying is that she might be one. It is most unlikely. But-here comes the big "but"-not impossible.
The passage suggests that the person reading may be an ordinary school teacher, yet the author playfully posits that she could perhaps be a witch. This idea invites children to look beyond the surface of people they know, appreciating both the mundane and the possible. The teacher’s smile may indicate a knowingness about the fun and absurdity of the idea, encouraging kids to embrace their imagination.
Roald Dahl emphasizes that while it is highly improbable for the teacher to be a witch, it isn't entirely out of the realm of possibility. This notion encourages readers to engage with the fantastical elements in the story, blurring the lines between reality and imagination. It sets a whimsical tone that permeates the narrative, prompting readers to consider the hidden mysteries around them.