After yesterday's quote the script explains -
Joe is a little surprised by that.- before today's quote:
Page 40 - Joe: 'Carolyn, I've been thinking about what you said... about leaving Collinsport, starting a new life.'
Though one might think Joe might be more than a little surprised considering the things Carolyn said in her first scene with Joe about her mother and getting away from Roger, Collinwood, and Collinsport.