You won't be able to get your case dismissed on the basis of the loss prevention guy following. There's no law against a shopkeeper or its staff from following a suspected shoplifter, not in Kentucky or any state. It doesn't matter if they follow you for miles or plan a stake out to watch you, if they suspect that you stole from them, they are perfectly within their rights to follow you. This type of action happens a lot, especially when the suspect has left the scene. The reason is because they can keep track of the suspect until the cops arrive.
The only way you can possible get this case dismissed without plea bargaining for a deal, is by a lack of evidence. Since the video doesn't actually show you taking the earrings, that's good for your case. However, if the earrings were found on you, that video would likely lend credence to the fact that you stole the video. If you decided to take the case all the way to trial, you probably won't win if this is the case.
The better and easier plan is to plea bargain out. Generally, it will just result in a fine and maybe some community service (especially since your theft was just a misdemeanor).

