@Rick17 Added to the fact that a host should not have to lie about the need to cancel a guest due to them breaking the house rules. How will the guest get the message that there are consequences when they Break House Rules going forward?? It only leaves it open to them repeating bad habits at their next Airbnb stay!
Also, if you accept responsibility for the cancellation, 'due to an emergency'...... the guest will receive a refund, and you will miss out on money that is due to you!
I agree with @Ian-And-Anne-Marie0 Good on you for sticking to your guns! Good luck, hope it works out for you.