Complex sentence: Lisa discovers that she has not been offered a scholarship; she was only accepted due to Marge agreeing to do all of the school's laundry and Marge has become an overtired, overworked drudge as a result.
Split into simpler sentences: Lisa discovers that she has not been offered a scholarship; she was only accepted due to Marge agreeing to do all of the school's laundry. Worse, Marge has become an overtired, overworked drudge as a result.