Willie Nelson's character observes that Matthew was a Sherrif without a gun. Matthew is not the first TV sheriff who did not carry a gun. Andy Taylor of Mayberry did not carry a gun.
During the shootout at the campsite, there was a lot shooting. They all tried to hit the bank robbers. They should have shot the horses. That was a common practice during the Civil War. Take out the mules and horses to cripple the artillery.
Teresa offered Jake chicken and rice.
Jake is smitten with Miss Teresa.
The bank was robbed by four men.