Leena-nee
Yes, I completely believe in supernatural events.
I've actually had several in my life time, the most recent being me seeing the ghost of my Husband's grandfather. It was rather creepy because before this had occurred I never knew what he looked like, I only knew that he had passed on.
Then one night I encountered a shadowy figure in the living room and after having a bit of a freak out I described what I saw and was told who I described sounded exactly like his grandfather eek
A couple months later I was going through Photo Albums with his family when I came across a picture of the man I saw, I pointed it out and was once again told it was his grandfather
Very creepy!
There's a similar story in my family. My uncle's wife saw his dead mom. She had died when my uncle was just a kid, so his wife had never met her, and my uncle had no photos of her. She came to my aunt in a dream, to warn them about something, and same kind of thing like you said: she described the person in her dream, and it sounded exactly like his mom, and when she did finally see a photo, sure enough, that was her.