Vivid Dream Of A Distant Family Member And "caught" Them The Next Day

There is a little more to this story, but in short I had a very vivid dream of my step-father's brother's wife. She was very angry and attacking my mom and other family members with a knife. The very next day I phoned my mom and asked her is she was fighting with her and my mom asked how I knew - apparently she was clearly angry with my mom and avoiding her, without giving a reason. Added to this, the very next day after the dream I took my wife out to dinner and we were placed literally at the table next to this lady. She was sitting with another man (her husband was out of town) and she asked me not to tell anyone - simply to avoid them getting the wrong idea. 

This lady is very religious and has never shown signs indicating otherwise, so I have had no reason to suspect any wrong-doing up until that evening. I also live in a city with a population of over 3 million and had not seen or spoken to/of her for at least 2 months before the dream. 

With the vividness of the dream and the tiny chances and timing of the "encounter", I can't stop wondering whether this is more than coincidence. I really am a skeptic and a realist about these things, but this one has me stumped