User blog comment:Jakusz/If Sadie competed in Total Drama World Tour/@comment-24392440-20140719183205/@comment-24392440-20140719184437

That does seem believable. Since she fought with Katie over Justin/Harold (and Beth for the latter) a few times, I'd say that Sadie getting jealous of Courtney/Heather/whoever Alejandro flirts would be pretty good, and, considering the way Alejandro plays, a pretty believable way to get rid of both girls at once, as well.