Complex sentence: When the series ends and Rory goes off to Chicago to begin a reporting career, Emily believes that that their routine Friday night dinners will end since Lorelai and Rory no longer need her money for any tuition.
Split into simpler sentences: When the series ends and Rory goes off to Chicago to begin a reporting career, Emily believes that that their routine Friday night dinners will end. \\ since Lorelai and Rory no longer need her money for any tuition.