How you deal with the situations under high pressure?

Once, when I was in the shopping mall, I have seen a lady that fainted and a lot people, that were standing around her. When I approached, I got to know that the daughter of this lady was almost not speaking English, she couldn't explain to anybody what happened. I found out that they were from Spain. As I knew spanish, I quickly find out that the lady had a funeral of her son few days earlier and that she did not eat anything since then. After the lady drunk a bit of sweet drink, she felt better, then ambulance arrived and took care of her. The lady thank me many times before she was taken to hospital