It's a miracle that she played that as well as she did.
The perp could have easily rushed her when she relinquished her two handed grip, and started waving the gun around.
Under that sort of stress, it also wouldn't have been a surprise if she'd shot him as he retreated.
Face it the waitress is a sweet heart. She had an opportunity to justifiably geld the dumb ass. You know massive hole in his package. AKA junk is really now truely junk. Its hitting low but still near Center of Mass. a true smaritan. Gotta love her most women enjoy us guys suffering.