However, Owen continues to exhibit possessive and obsessive behavior over Teddy and her pregnancy, causing Amelia to permanently split from their relationship. Owen then adopts Leo as his son and welcomes his newborn daughter, Allison, with Teddy, whom they named after Teddy's best friend Allison Brown, who died during the collapse of the second tower on September 11, 2001. Teddy has a change of mind and decides to try a relationship with Owen.