Dr. Shafron just came out and told us that the image guidance system they use was not aligned properly--they discovered this in the pre-op checks they do after they get her all draped, but before he makes any incision. It was off about .25 cm, so they are going to undrape her, re-align the system, and try again.
We're at Phoenix Children's--we got here without incident, and all of Abby's prep went just great. Dr. Serlin was her sleepy doctor, and we even ran into Dr. Maze. Abby is off to sleep and in the MRI right now. They will come and let us know when they begin the procedure.