C185 Way Too Simple
"Hello, Ms. Morris," Quinlan greeted as he answered the phone. In Mrs. Morris's presence, he always referred to Aveline by her first name. But when it was just the two of them, he reverted to calling her Ms. Morris.
Aveline felt a twinge of discomfort at the formal title; she much preferred Quinlan's casual use of her first name, Aveline. Their ages weren't that different