Q. Why would someone need a handgun to buy bread? 😳

[underpants]

44. She's practiced this.

Haven't you seen the movies?

So there's this immediate action needed.
She steps back with her right foot. Says "HOLD IT!". This freezes the threat.
She unholsters the weapon (putting her arm at least parallel to the ground), raises the weapon all responsible owner like, brings the second hand in to get a good grip, squares her shoulders, begins issuing commands to said threat who at this point would have actually shot her or went over to the olive bar got a bite and came back to shoot her. Or just walked away.