A very sad story. I feel for her kids.
That being said, however, I have real concern for people who use this as an excuse to avoid certain types of vehicular cycling. The reason the deaths make the news is because they happen so relatively seldom. No one would buy a paper in which the headline was "Millions of Responsible Cyclists Make it Safely to their Destinations". This is the reality and while it is sad when someone passes, and yes, we do need to do work to make these things as close to non-existant as possible, this in no way means transportational cycling is more dangerous than other forms of transportation.