Does it matter? If she was on her bike, or with her bike on the road, she had the right-of-way. It is not legal to run down and kill bicyclists. Besides, maybe she was stopped to allow traffic to pass? Maybe she stopped to get off the road? Lots of possible speculation. Was she crossing the road? She’s dead so cannot answer. End of day, driverless car, inattentive driving assistant (what do you call the guy), and a dead bicyclist, smashed up bicycle, on road.
Does it matter? If she was on her bike, or with her bike on the road, she had the right-of-way.
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Arizona: Vehicles must yield the right-of-way to pedestrians within a crosswalk that are in the same half of the roadway as the vehicle or when a pedestrian is approaching closely enough from the opposite side of the roadway to constitute a danger. Pedestrians may not suddenly leave the curb and enter a crosswalk into the path of a moving vehicle that is so close the vehicle is unable to yield. Pedestrians must yield the right-of-way to vehicles when crossing outside of a marked crosswalk or an unmarked crosswalk at an intersection. Where traffic control devices are in operation, pedestrians may only cross between two adjacent intersections in a marked crosswalk.
http://www.ncsl.org/research/transportation/pedestrian-crossing-50-state-summary.aspx