Originally Posted by ermdjdsj
The agent may have been concerned about "security," e.g., you did not fit the normal traveler profile who likes to go from
A to B with as few connections as possible, and perhaps she wanted to check on the legitimacy of your reason for doing something different.
I believe that's outside the scope of her job. She is supposed to check in the passenger, check the luggage, and print boarding passes.
"Security" is allegedly checked by the TSA at the checkpoint.