What if the neverseen found Sophie first and she stayed on their side? How would everything turn out?

"Foster! Please hold on! I still need you. Come back! Please my love please!" Keefe says crying his eyes out. Sophie Foster has a life threating disease that none of her friends know about. Only her adoptive parents know. She's done a really good job at hiding it. Until she bumps into Keefe at the hospital. Not being able to come up with a good excuse he discovers her secret. Telling him to keep it a secret he agrees. From then on Keefe decides he is going to spend every moment with her. Will Sophie be able to fighter her disease and be able to live a happy life with Keefe? Or will it turn into a sad ending for the two lovers?