Bunny and Butterfly are talking about Death's Daughter, Ginny - a reaper of vengeance. They say that when someone calls out to her by singing her son, she will appear to avenge them. 
 Pretty Deadly plunges straight into the story, which makes it rather confusing. Characters are thrown at the reader in quick succession - characters with traits or dialogue that make it seem like they might be interesting, like there might be something going on that I'd like to know about, but then the story just keeps moving on and the mystery is never acknowledged. 
 The illustrations have a similar issue. While absolutely gorgeous, they are often a little too stylised, making the action difficult to follow. I sometimes couldn't tell what was happening in a panel until I'd read a few more and could piece together what happened by its result. 
 The use of animals and animal-human hybrids gave the story a mythic feel, which I quite enjoyed. 
 Unfortunately, though the visuals and ideas were great, the execution just didn't do it for me. There's too much "mystery box-ing," which leaves me feeling frustrated rather than intrigued.