As for your take on the officer, I don't get that he would have needed her to actually go in, just that she stayed on the premises. He doesn't necessarily need to keep them inside; in fact, it might be a bad idea if there's an armed, desperate man inside.
So he sends them back to the building but forgets to mention they shouldn't go back inside!

He just wanted them to remain at the facility.
Well he can't have wanted
that very much, can he?---------------he lets them walk around the building, where they are free to proceed to the street!
Sorry, Mr Todd, but this officer just isn't doing what you need him do here