Knowing Lady, she would have deducted the boat money from Dante's pay after completin the mission She's really into getting money off Dante in the anime and DMC4.
It's a shame though that they did not put this kind of detail in the game. It would have made the overall story a lot better.
agreed still praying for a devil may cry game that lets you play as nero dante vergil lady and trish*high hopes i know*