If you disregard the age of the heroine, you can give this book to your YA readers and they'll enjoy it. Consider it a late bloomer coming of age tale.
Jeanne La Flambeau is the daughter of a famous family of chefs who run a successful French-Mexican restaurant called Oui-Si. Sadly, Jeanne can't really cook and can't even eat in front of people.
When her boyfriend Johnny (also her adopted cousin) steals the ruby scepter that's belonged to her family for years. Jeanne decides to take the painted skull that fits into the scepter and make the recovery herself before she tells her parents the valuable heirloom is missing.
Jeanne's journey allows her to discover her resistance about food and truths about her own family as well as how they fit into the Native American mythos.
The story is well written. There isn't musch world-building for a fantasy, since the author is using New Mexico, Arizona, and Mexico settings as a basis, but the interior connection to the myths is fascinating.
Like every family, the La Flambeaus don't just have a crystal skull, they have more than one skeleton in the closet. All is revealed by the end, setting the kindred on vastly different courses than they'd imagined.
One thing to note is this novel is a reprint. It would have been written vastly different if cell phones were more prevalent as they are today.
I think "Coyote Cowgirl" could have stood just one more editorial pass. The character Miguel gets a hilarious name change in the middle of the novel among other small issues.