Shadow of Time by Jen Minkman
The research on this book was incredible. I was quite surprised to find out at the end of the book that the author had never even been to the Navajo reservation. She definitely had me fooled and impressed me.
There’s part romance, part mystery and history and part paranormal in this story. The characters had an interesting journey through time and I liked them more and more once I found out how things were all linked together.