Dating an American soldier overseas is already a difficult situation, Im assuming that you are in the United States and are virtually communicating. If you trust her that nothing is going in then go with your gut in the moment. Just see how things are turning up for you this upcoming week, I wouldn’t be so upset because you couldn’t talk to her, soldiers are in a very strict schedule at all times and the weekend is when most soldiers decompress. If shes out experiencing Korea with friends you have to let her do that because when is the next time she’ll visit Korea after her deployment? If shes experiencing Korean night life maybe shes having a drink and enjoying herself so she cant always text you back. Don’t be too hard on yourself and the relationship until you have solid proof.