In the scene where she meets Graybow in his apartment she punches him in the nuts while he is holding a meat cleaver in his hands. They show the meat cleaver hit the floor, then his face of pain, then him dropping to the floor. If you look closely in the bottom left corner of the screen, you'll see the meat cleaver in his hands again.
When Bernice disables the alarm, she has to remove two screws securing the panel cover. While she unscrews the lower one, we can clearly see that the upper screw sticks out of the panel as if it had already been unscrewed. However, the next thing we can see is the upper screw still unscrewed in the panel.
At the scene at the used book store when Bernice is on the phone trying to reach Abe Froman, the shoplifter approaches the counter to pay for the books. Bernice then locks the door and flips the closed sign leaving the two of them locked in the store. The shoplifter is caught and gets angry, and after Bernice pulls her gun on him and tells him to never steal from her again, he flies out of a now unlocked front door.
Elizabeth Ruscio is credited twice at the end of the movie. Moments after her character is displayed with the actress' name credited in a caption, as is done with all the other major characters, Ruscio is again credited under "Also Starring," at the beginning of the rolling credits.