I had just about the same thing happen with a good friend of mine about a year ago. I sent her a few texts and a few facebook messages over a years time and finally found out she had passed away. I thought she was just in a bad place because she was a retired military police officer and had really bad PTSD. When I started getting really worried I facebooked a mutual friend and they sent me the news article of the day she went to the gun range and shot herself.... that was terrible terrible news