A review by bickie
Ghost Squad by Claribel A. Ortega

Scary story about two girls who deal with paranormal threats to save their town (St. Augustine, FL). Of Dominican heritage, Lucely enlists the help of her dead relatives who live on as fireflies who sometimes take on corporeal form. Nods to Coco, the Goonies, Ghostbusters, and Harry Potter.
Great spooky read with strong family ties (blood + found).
One thing that seemed odd was that a villain was mentioned as being a "Daughter of the American Revolution," an organization that started in 1890, but who seems to have come from a time shortly after the 1690s/Salem Witch Trials. I went back and reread the parts about her, but I might have missed something there.