I think this also speaks to the unpreparedness of the typical gun-wielding criminal. They fired rounds numbering the double digits and did not hit her... how many of us would be satisfied with that?
Not that I think all CCL holders or legal gun-owners are crack shots, but those of us who out thought and energy into defensive shooting tend to care enough to work on being accurate. That stands heavily in our favor.
It seems that more often than not, those who wield a gun in a crime see it as a magic force that will make them successful, where we see a gun as a tool that is there if/when we need it. There are, of course, exceptions on their side as well... some criminals are excellent shots, which we also need to be aware of (and really, we should assume).