Was it the decision to go for the cup of coffee at that moment? Was it the decision to go to that one particular coffee shop rather than the other, closer one? Was it the delay at the traffic lights caused by the broken down car that meant you had to wait to cross for those few moments longer?
Was it the fact that she was already late for her appointment and was not looking where she was going? Was it the fact that she was rummaging through her bag, checking that she had both the card and the present, and was not really looking where she was going as she rushed along the pavement by the crossing?