Vermilion: The Adventures of Lou Merriwether, Psychopomp by Molly Tanzer

Goodreads Storygraph

"Gunslinging, chain smoking, Stetson-wearing Taoist psychopomp, Elouise “Lou” Merriwether might not be a normal 19-year-old, but she’s too busy keeping San Francisco safe from ghosts, shades, and geung si to care much about that. It’s an important job, though most folks consider it downright spooky. Some have even accused Lou of being more comfortable with the dead than the living, and, well… they’re not wrong. When Lou hears that a bunch of Chinatown boys have gone missing somewhere deep in the Colorado Rockies she decides to saddle up and head into the wilderness to investigate. Lou fears her particular talents make her better suited to help placate their spirits than ensure they get home alive, but it’s the right thing to do, and she’s the only one willing to do it. On the road to a mysterious sanatorium known as Fountain of Youth, Lou will encounter bears, desperate men, a very undead villain, and even stranger challenges. Lou will need every one of her talents and a whole lot of luck to make it home alive…"

Sometimes will tell you a book is weird, and you will know that that person is a total fucking normie. But Vermilion is really, genuinely weird -- and also thoroughly queer. If you enjoy slipstream gender fluidity or wish Red Dead Redemption had ghosts, this is the read for you.