Strange Vision In The Garage

When I was younger, I remember being much more sensitive to certain things. I'm not sure if this is a ghost or more of a psychic experience, but I still haven't found an explanation to it.

This experience happened when I was about 5. When I was younger, my family and I used to travel to Peru relatively often, because my grandmother lived (still does) there, as well as most my family. We were staying at my aunt and uncle's place.

Since they had gone to work taking their car with them, my cousins and I were playing in the empty garage. We were roller skating. Suddenly, they all decide it's time to go back inside, so they put their shoes back on and go in.

I stayed outside for a few more seconds, because I was having trouble taking the roller skates off, and that's when I saw it: on the brick wall opened some sort of thing, perhaps like a portal, or a projection, that showed me the image of a young couple in their pajamas, sitting on their bed and hugging in fear as they stared in front of them, like there was something threatening them, but it was outside my field of vision. I remember they were wearing white, and the girl had long, black, curly hair. The guy was holding her as if he was trying to protect her. Suddenly, the image changed, and there was an older woman with short, spiky white hair laughing with an evil laugh. I then knew it was her who was threatening the couple.

I was so scared I couldn't move. Finally, I managed to put on my shoes and run back inside, with the evil laugh of that lady still echoing in the background. I never found out who these people were, and no one ever believed me when I told them. Were they ghosts?

I still don't know why I saw what I saw, or what that vision was. It was surely not a dream, since it was the middle of the afternoon and I had been playing around with my cousins all day. Any ideas?

Thanks for taking the time to read this.