Oops. I finished A Song Below Water so long ago, Libby snatched it back. It's a best friends story and a Black girls' story, and a being different story. The protagonist is a mermaid, in a world where such creatures are known as sirens. Only Black women are sirens, so obviously they're dangerous, and if one gets killed by a lover, it's probably her own fault. There are other magical creatures in this PDX-based story: Eloki, sprites, and a gargoyle. And ren faire geeks, if you think of them as magical!