AR-10 seems too dramatic but it is a point that needs to be made. Holstered sidearm is courteous indicator you are serious and is a warning to the insane and the criminals. Good for her! LET HER CARRY.
She is lucky that loaded or not, that rifle didn’t jump out of her hands and go on a merciless killing spree
In many states open carry of long guns is legal while openy carry of handguns is not. She may have been trying to make her point while obeying ridiculous laws. She may be pushing the boundaries of OH law.