Isabel had known full well what Alex had meant. But she also enjoyed making her son squirm on occassion and had willfully misinterpreted the situation for her own amusement. And enjoyment. Because kissing Alex would always be a joy for her. She kissed him one more time for good measure and Jamie responded by making gagging noises until they stopped.
"Do Alex and Izzie do this stuff in front of you too?" Jaime asked, glancing over at Amy again.