Grimm, good post, just I don't understand why you had to negate the presence of the police.
Detaining her from using the phone was sufficent to have not the police coming; negating the very presence of the police at the bank makes her looking unprepared, a thing one like her, that fight supermen without having useful powers, can't allow herself to be.
You even did not take the time to explain what the sirens they heard were...
