Complex sentence: Her books have been criticised as being elitist, sexist, racist, and xenophobic, at odds with the more liberal environment emerging in contemporary post-war Britain, but they have nevertheless continued to be bestsellers since her death in 1968.
Split into simpler sentences: Her books have been criticised as being elitist, sexist, racist, and xenophobic, at odds with the more liberal environment emerging in contemporary post-war Britain. Blyton's books have nevertheless continued to be bestsellers since her death in 1968.