Final answer:
The context for Mrs. Skower's Magical Mess Remover and its relation to Laura Thorn is missing, making it impossible to answer the question with the given information.
Step-by-step explanation:
The student's question does not correspond to any of the provided excerpts, suggesting that the context of Mrs. Skower's Magical Mess Remover and its reminder to Laura Thorn is either a typo or a reference to a different text not included in the provided information.
Without the proper context or information, it is impossible to confidently provide an accurate answer regarding Mrs. Skower's Magical Mess Remover or what it reminds Laura Thorn of.