A Scary Story

I have to begin this tale explaining something, I've never  believed in ghost, scared stories, witches or UFOs, etc; even though I'm easily frightened, also  I'm incredulous, but I am really sure that this history is true.
I was 9 or 10 years old and I had gone to the countryside with my mother because there were my relatives from Santiago, I remember we had a amusing day, had lunch together (as we always  did as my great-grandparents were alive), and with my cousins we had a lot of fun: we swam in the stream, ran and did a lot of games. In the night we always made a bonfire and the kids had to recollected branches and another thing to throw into the fire, and when we were around the bonfire, my uncles told us histories about colorful lights in the sky and how it abducted people; they also told histories about the evil and the pacts he made with the farmers and what happened with the soul of these people in the hell. Those histories game me curiosity, but I believed all were lie, that they made it up only to scared us. In that we were, when somebody (I don't remember who), told a story about a woman called La Llorona, who had lost her children (they were killed), and she is looking for revenge and it said that she could steal children so replace hers.
When it became cold, everybody went into the house (an old house) and with my cousins went to go to bed but we stayed over the bed talking about the stories, how was the day, etc, and besides we were laughing and throwing pillows  and toys to each other, when suddenly, one of my cousins made us remain silent because she had listened something. When everything were in calm, typical sounds of the countryside were listened, but something else was also listened; someone were crying outside our door. It was a harrowing crying full of pain and suffer. We were so scared almost paralyzed of the fear, that only my bigger cousin dared to make something and he opened the door, which gave to the patio, but no one were there not even an animal; although, it was dark anyone couldn't hide behind a tree, besides, the sound disappeared immediately when my cousin opened the door and the crickets or the wind were not even listened by a good while. 
It was so weird so I decided go to look for my mom and I asking if I could sleep with her that night, and she said only if I didn't move all the night and I am pretty sure it was as I had promised her.