” It was my uncle calling to say that my grandmother had passed. He said: “You could not have been in the hospital’s parking lot, when she died”. “
I must say, I don’t understand your story. For example did the above detail have meaning? What significance was being in the parking garage or not when she died?
Because as soon as he left, she died.
What he is saying is that he had barely made his way to the garage to go home, and she was dead.