It's a non-solveable problem until we as a society decide to value the occupations that deal with safety and education.
Michael Brown
...and until we as a society are more prepared to take care of ourselves. Asking a dispatcher for permission to get a gun, protect yourself, or whatever puts unnecessary burden on the dispatcher. Know your laws, have a plan, take whatever action you need to take and report it to the authorities as necessary.
It isn't the dispatcher's fault that the lady chose to pick up a phone before she picked up a gun.