X-Factor, Vol. 6: Secret Invasion (Used Book) - Peter David
X-Factor is in pursuit of Darwin, whose father is looking for him. She-Hulk and Jazinda are in pursuit of Longshot, who may hold the key to defeating the Skrull invasion. With Darwin and Longshot on the run, neither of them wanting to be found, you'd just assume that X-Factor and She-Hulk will work together smoothly to accomplish both their goals.