Sounds like she did just about everything right, especially in quickly seeking assistance and having an escort to her car. But the bottom line, EDC is a must, plain and simple. While going to guns is a last resort, not having one means what might be your best final option isn't available. Don't see much of an issue with purse carry for women if they pay attention to the purse at all times; it's not ideal, but women's clothing, especially work clothes, do not readily lend themselves to CC ...
"The welfare of humanity is always the alibi of tyrants." Albert Camus