I'd make the rat prints red rather than pink, more of a bloody color, if you're going for an adult, darker feel. Also, Addison has a good point about...
In one of my novels, I tried to set up the MC's best friend with the MC's younger sister, only for the friend to inform me in no uncertain terms, in...
Interesting topic. The majority of the Fae in my novels are lefties -- kinda the inverse of the 90/10 ratio of righties to lefties in the real world....