The hidden lady (first part)

It was a cold winter’s night and as usual, my friends arrived home. When it was too cold for being walking around our neighbourhood we used to stay at home talking, listening to music or playing cards, but that night was perfect to go out. Never had I imagined that my friends and I would be involved in such a situation.
As the night to be ready to be enjoyed, I convinced my friends of going out for a walk, even knowing it was too cold and dark outside, I asked them to go to the surroundings of the Lawn Tennis Club as it was covered with trees and I loved walking over there.
As we were arriving to that place, some of my friends walked slowly because it was a bit dark but my friend Cecilia and I were walking at the front, so imagined our fear when we noticed there was a person dressed in white hidden behind one of those trees. The first thought that came to my mind was that he or she could be playing with somebody else and that was why that person was hidden, but there wasn’t anyone else in the street but us.
As I was quite curious and I was not afraid of anything, I told my friend to keep on walking so we could see nearer who that person was. When we were at about ten metres from that person, she (because it was a woman) looked at us and she ran till the next tree and she was carrying something on her arms. When she ran, we also ran but for the other side.