Was I too cruel to my housemaid?

I recently played an hilarious wheeze on my housemaid. Because she had forgotten to serve me my afternoon gin, she was locked in the pantry for the evening. So, I decided to have another servant yell 'fire!' repeatedly and have everyone in the mansion run about in a panic. The final, beautiful masterstroke was to create a small, controlled fire by the pantry door, so that smoke would enter it,, for that feel of authenticity. You should have heard her deafening screams of utter panic! Now, she is threatening to tell my wife about our 'night time dalliances' as revenge. Did I go too far?