Surveillance Spook

So we are working a case at a small Pub in Nashville. In small places we usually  hang out by the restrooms. We are sitting directly behind a couple at the bar. We are not engaging them, they are engaging us. The bearded man and the short blond tell everyone they are from Texas. For some reason they keep driving this home for the other patrons. The couple seems off a little, maybe paranoid. What I know is, the two kept turning all the way around to look at us. My partner said my shoes gave us a way, white tennis shoes. For some reason the couple gets nervous. The bearded man gets up puts cash on the bar, then heads for the back of the bar where the darts are located. Then the female gets up to go the restroom leaving her cell phone on the bar but taking her purse. My partner said, she must be leaving, she is taking her purse. Well she entered the ladies room at 9:40 pm according to our video surveillance. At 9:47 pm, I went in the ladies room and the blonde female was gone. There is just no way out without coming right past us, I thought. I must be wrong because that little Texas filly just gave us the slip. Although she had no reason to do so. The only thing we can figure is she came out of ladies room then ducked under the hinged bar counter top, kept low to the floor then headed out towards the back where bearded man went a few minutes earlier. After laughing at the fact the couple was not on our radar but split out of there like we were the cops and they had outstanding warrants, we looked for these two people. We could not find them. It was quite funny as well as a learning experience about human behavior.