Piper was so disillusioned and I think she took Kate’s rudeness rightfully as an insult to Sarah.
That show painted one of the best portraits of the difference between conservatives and liberals that you will ever see...
At the end, Sarah asked Piper if she wanted to walk them to the plane. Piper’s expression as she vigorously shook her head said it all. (In fact, there were some priceless expressions exchanged during this episode, no words needed!) Then she said, “C’mon, Mom” — she was ready to move on and forget it. She’d been so excited about meeting the children initially... I wonder what it’ll be like when the kids cross paths in the future.