Dream about a missing girl?

Last night I had a dream about a missing girl (who is truly missing). I know what happened to her and i have a vague image of where she is and the surroundings and the people around. In my dream I wasn't there but it was like I was seeing all of this happen..so I wasn't actually involved in my own dream. She is still currently missing and it's bothering me because I've never had such gruesome dreams. I don't typically have nightmares...but this one wasn't a nightmare it was more informative. If anyone could help me try and understand this..please let me know..I feel odd knowing all this information since this girl is still currently missing but I saw her..and I feel like I know some details. Please help!!