User blog comment:That Epic/Wiki Project- Chapter Two/@comment-3462398-20140131160000/@comment-26157209-20140131184323

As others have pointed out, Katie via her bio was meant to be more of the type to follow her heart, while Sadie her mind. This is an easy way to start showing the differences... In Example, in the first challenge, maybe Katie wants to stick with Sadie, since that's all she ever knows... But Sadie says no, since she knows that it won't be good for either of them? ITP, Sadie wants to stay with Katie, but knows if they try and stick together during the team-phase it will get them eliminated.