What could my dream mean...?

I know I ask this question before but please take the time to read it. You wont regret it I promise. I dreamt that me and an old best friend of mine were hanging out. I dont remember much but one thing I do remember is that my best friend grabbed my hand really tight and it felt so real. It felt like she was scared and thats why she grabbed my hand so tight. I never had a dream like this before and now im worried. I really miss her and love her. She had moved away and I lost contact with her. She was going through some major family problems and she didnt have a good childhood either. I tried searching for her on facebook and people search but I found nothing. I find it ironic that she hasnt made an facebook either since she is into stuff like that. I just know in my heart that she would have contacted me by now and its so unlike her to not have already. But now after this dream I honestly feel like she is in trouble or she isnt here anymore. I just know that she wouldnt went this long without contacting me. Can anyone please tell me wether this was a sign that I should hire a private investigator? Or what could my dream really had mean? I love her soo much and I have to know where she is.