The worry lies in the absence of contacts at all, even if her laptop was playing up and she was unable to communicate in that way. Even if she had gone to sort out her computer problems, she would have made contact with someone by now. What a truly dreadful worry for family and friends.
Now that the police are involved we have to assume that all hospitals have been contacted and traffic police, in case there has been some mishap whilst on the road to a town to sort out her computer.
Keep up the good work everyone.