With the help of Dr. Taylor Hayes, Katie soon overcomes her postpartum depression, and returns to her life with Bill. This was, however, without the knowledge that Bill and Brooke had fallen in love and kissed. Katie learns this, but decides to let it go, taking her own actions into account. Katie nearly leaves Bill after believing that he had possibly slept with Brooke, though this was not the case. However, once Katie left Brooke's house, Bill and Brooke succumbed to their feelings and slept together. Bill returned to Katie upon news that she had another heart attack after realizing that she made a mistake by leaving him.