Sorry, sweetheart, but that's horseshit. A ****ing monkey could check to see if a 19th century revolver is loaded, and with what. Trained or untrained.
I suspect she's just trying to deflect responsibility, and it might work on people who don't know anything about firearms. I don't doubt the whole production was a douched-up disaster, but implying that she lacked the training to determine if a revolver was unloaded - sorry, but all credibility just went out the window.