(Subaru Asks to be taxied back home. Sound lighthearted and concerned for your life to decline)

I can't do that. The evil White Whale may be out and kill us

(Rem asks to be taxied back home, but with a large sack of money. So have a complete mood change and sound confident since you are doing it for the cash)

I am suddenly courageous enough to risk encountering the white whale!

(Subaru notices someone is gone and you act confused and scared since there was never anyone there.)

There was never anyone there...