Parents often worry when their children don't come home on time or answer their phone calls and so not being worried in such a situation would be abnormal.
Consider the statement "I was pretty shaken up when my son didn't get home on time and I couldn't reach him". Based on this "I was absolutely calm and composed when my son didn't come home on time and I couldn't reach him on the phone." a true statement? Yes, no, or I don't know?