"Counting on You"

The last thing I noticed when I listened to Pool It! recently is in "Counting on You," specifically in the line "Knowing you care after all."  It's a bit ambiguous whether "after all" is used adverbially or not, but the "all" is sung with a melisma (C Bb), so if it's taken in a more straightforward manner, there's something of a musical sense of the entirety of that "all."