From studying many bicycle-related police reports, I was dismayed at how often I read the phrase "a pedestrian riding a bicycle."
Personally, as a biker, I get slightly annoyed by pedestrians who seem to think I have little control or awareness. I ride on the road where practical, and, if on sidewalk, I go much more slowly and sometimes just get off and walk if the area calls for it. Generally, bikers are much more aware of their surroundings than drivers (both out of self-preservation and an unobstructed, elevated view).
Of course, the best solution is fully separated paths for walkers, bikers, and cars. And, in this instance, it looks like there is ample room for building that, with no street parking to complicate things (and the sidewalk also looks wide and sparsely used).
Sad event, but it's likely a human driver would have killed her as well. She was on the road at night without lights, jaywalking without attention to the on-coming traffic.
One could argue the car was driving faster than it's headlight distance safely allowed. If so, humans are going to be quite frustrated with how slow autonomous cars drive at night.