You asked me to quote her saying that the guy ducked in. Whether it's true or not (and the totality of the evidence indicates that she didn't see anybody "looking panicked" or "ducking in"), she did say it. Did you say "Who said Postal saw the guy duck in? You're confused" just so you could play rhetorical games again?
Here (again) is where you lack the ability to use your common sense.
Postal said she saw him, she saw the panicked look on his face.
She did not see him duck in; she made an obvious assumption based on the fact that she did not see him continue walking west of the theater (which is the direction she was looking) and Brewer told her the guy ducked in.