Guardian angels exist

When I was walking to school when I was about 7-9 years old a car stopped beside me and a man lean out from the window and he wanted to talk to me. I do not remember what he said but I do remember that I thought it was strange. A woman who knew me and my family came walking behind me and the car. I was about to answer the man as I had stopped and stood on the pavement. Our family friend also stopped and bent down to the cars window and asked him what he wanted. The car just speeded off really quickly and he did not say a word...That was really scary.
If our family friend had not appeared and if she had not reacted what could have happened!?
I was very lucky that day I am sure of that. She was my guardian angel that day.