The Celestial Family from Sister Mine by Nalo HopkinsonRead about the other entries on the list.
Makeda and Abby are sisters, formerly-conjoined twin daughters of a demi-god dad and a human-turned-sea-creature mom. They experience a healthy dose of sibling rivalry, but are still loyal and loving as they try to track down one sister’s missing magical mojo. Life would never be dull on a block with its own resident pantheon, and Makeda’s bravery and ingenuity in facing down magical threats would be welcome in the face of any neighborhood busybody. And her sister’s supernatural musical ability also makes them the perfect ones to start up a garage band: the Abby Normals, maybe?