I'm new to this site and to games made in the Quest format, but The Witch's Apprentice is the third game I've completed (the first one was Alice and the Wishing Tree, followed by The Legend of Robin Hood, and both were played prior to registering).
I love big, sweeping IF with deep emotional reach, but it's always great to take breaks from those kinds of games by playing simpler works designed with amusement as their primary goal. The Witch's Apprentice is such a piece. All of the puzzles were logical, requiring only creative thinking, and the characters were colorful and diverse.
I only wish that it were possible to interact with them in ways that weren't just related to the main objective. I understand, however, that this might be a limitation of the engine (and as I said, I'm unfamiliar with Quest).
I also noticed a few typos here and there, but they're not so frequent that they would ruin the game for anyone. In the future, though, I recommend checking the prose for errors. It's always a good idea to make sure your writing is as polished as possible.
Congratulations on a job well done!