Prompt: 

Mandy sat on the cool tiles as she let the horror of what had just happened sink in.

This prompt came from the lovely Blue_Kiwi_777!

Please let us know if you would like to use it! :) 

I (Sunshine) particularly like this prompt because it can also allow the main character to be the 'antagonist' because they've done something really bad. I love psychological thrillers where the main character is the bad guy, and you don't even realise it until the end.