The connection between Lev and Rikki forms almost instantly, but the relationship building that follows is not completely smooth sailing. LOL. Kidding aside, Lev and Rikki both come from turbulent paths and are in some way damaged by past events, so even though at core level they have instant trust, there are still issues to be worked out between them.
Feehan does a beautiful job of painting the world as seen through an autistic's eye. The imagery and sensory descriptions give the reader a small glimpse into the difficulties and obstacles even a high functioning autistic faces in day to day life.