Think others on this thread already tore your argument apart.
If they were really worried about a 5’6” woman with a daypack they could always just say Stop, and search her. It’s done thousands of times a day by ordinary police, not Praetorian Guards with a racial axe to grind. They don’t shoot first on any vague supposition.
Yep, you got me. No way 5'6" woman could push a detonator soon as someone yells "Stop". How much C-4 fits in a daypak, anyway?