When I do these "Debbie--have you seen" posts, I usually copy the description of the book, but this time, it doesn't help! The Native content is not included in the description, which I find a bit ironic, given that the word "hidden" is in the book's title:
The hunt for a dinosaur skeleton buried in the Badlands, bitter rivalries, and a forbidden romance come together in this beautifully written new novel that’s Romeo and Juliet meets Indiana Jones.
Somewhere in the Badlands, embedded deep in centuries-buried rock and sand, lies the skeleton of a massive dinosaur, larger than anything the late nineteenth century world has ever seen. Some legends call it the Black Beauty, with its bones as black as ebony, but to seventeen-year-old Samuel Bolt it’s the “rex”, the king dinosaur that could put him and his struggling, temperamental archaeologist father in the history books (and conveniently make his father forget he’s been kicked out of school), if they can just quarry it out.
But Samuel and his father aren’t the only ones after the rex. For Rachel Cartland this find could be her ticket to a different life, one where her loves of science and adventure aren’t just relegated to books and sitting rooms. Because if she can’t prove herself on this expedition with her professor father, the only adventures she may have to look forward to are marriage or spinsterhood.
As their paths cross and the rivalry between their fathers becomes more intense, Samuel and Rachel are pushed closer together. And with both eyeing the same prize, their budding romance seems destined to fail. But as danger looms on the other side of the hills, causing everyone’s secrets to come to light, Samuel and Rachel are forced to make a decision. Can they join forces to find their quarry—and with it a new life together—or will old enmities and prejudices keep them from both the rex and each other?
See? Nothing there that references Native content. Reviews, however, provide more information. These are excerpts from the Barnes and Noble page for Every Hidden Thing.
Publishers Weekly's review says (in part):
As their friendship develops into romance, their camps are endangered by the local Sioux tribe after Rachel and her father remove relics from a burial site.
School Library Journal's review says (in part)
... the rival camps must also deal with realities of life in the historical American Wild West: lack of supplies, possibility of wildfires, and potential violence at the hands of the "badlands" inhabitants (often referred to as natives, Indians, or Sioux).
And, the Kirkus review says
Rachel’s narrative reveals that she’s one of the few white characters with enough conscience to reflect on the savagery of the explorers’ treatment of the local Pawnee and Lakota Sioux.
I reviewed Oppel's The Boundless last year and found serious problems with it. If I get a copy of Every Hidden Thing, I'll be back.