abilities. Messiah Complex Theresa assists Rictor's infiltration of the Purifiers and accompanies the X-Men to rescue the mutant baby and X-Force. She later receives a call from Peepers, who is being pursued by Predator X, but Theresa arrives too late to help him and finds his remains. Siryn prays at Madrox's bedside when he awakes, and takes part in the X-Men's assault on the Marauders' base with Monet and Guido, fighting Exodus in the battle. Divided We Stand Siryn reveals that she is pregnant with Jamie's child, and after talking with Monet reveals she intends to keep it. When she attempts to tell Jamie he mistakenly believes that she wants to quit X-Factor. Monet later helps Siryn realize that she still loves Jamie. Siryn tries to tell him again, but Arcade appears and destroys Mutant Town. Afterwards, Jamie reveals he knows she is pregnant and the team moves to Detroit, Michigan, to get away from Val Cooper and O*N*E. Sean After moving to Detroit, Theresa becomes inactive during X-Factor's field missions. She gets into an argument with Val upon finding out X-Factor has been under the employ of O*N*E since the destruction of Mutant Town. Val reveals her interest in Theresa's child and during a heated discussion, Theresa's water breaks and she is taken to a hospital. As Theresa goes into labor, she proposes to Jamie, who accepts. She gives birth to a boy, and they name him Sean after her father, whose death she finally accepts. Hours after his birth, baby Sean is absorbed into Jamie's body as Jamie holds him, to his horror. Theresa attempts to save the baby and claws at Jamie's chest to get him back but pops some of her stitches and goes back into surgery. Jamie reveals Sean was an "infant dupe", and was absorbed into him as a duplicate would, but Theresa declares that she would break his neck the next time she sees him after breaking his fingers. Assuming leadership and departure After the pregnancy, Jamie leaves the team and Theresa takes charge, though she sinks into a depression. Following Jamie's return to the present, he offers to leave the team headquarters in Detroit and start a branch with Guido in New York. She disbands the Detroit team, with the remaining members defecting to the New York branch. Theresa returns home to Ireland where she runs into Reverend John Maddox, one of