I'm of two minds on this book. I believe that Anne Hillerman has really captured the flavor and characteristics of her father's characters. Changing the character focus from Leaphorn and Chee to Bernie makes good sense, and Bernie's character is well-developed and continues to develop. The focus on Bernie's mother and sister is an effective vehicle for bringing out the character's thoughts and feelings. Necessarily, Chee and Leaphorn are less-well drawn, but avid readers will still be able to accept them.
My major problem is with plot and craftsmanship. Unlike "Spider Woman's Daughter" that had an intricate and well-evolved plot, the plot line in "Rock with Wings" was never really that well developed. The lead-off character with his box of dirt was a MacGuffin for the most part; and the "bad man" behind it all was only portrayed as "bad" in the closing scenes. The plot device of the grave in Monument Valley didn't work for me, as it was a lot of work to build it up to be a controversial and critical component of the story, and then it actually had little or nothing to do with the main plot line in the end. Linking the two issues of the gravesite and the solar panels through the cheezy developer/producer was very weak, especially when it was totally undeveloped except by a passing reference. And finally, the "conversion" of the lead-off character from bad-guy to guy-who-wants-to-go-straight was almost childish.
Overall I give this an "average" rating. I enjoyed the writing and the characters as sketched from Tony Hillerman's book, the writing style is very similar and comfortable. As a "who dunnit" though, it really isn't that suspenseful or challenging a story.