What does Eva smith represent? Why is this important?

All the characters in Priestley's play are essentially constructs, and not real people, of course. Eva Smith (and Daisy Renton) represent all of working class women. Even her anme name is simple: Eva (simple and very similar to 'Eve' - the supposed first woman) followed by Smith (the most common surname). Daisy is a very common and everyday flowing, small and underappreciated, while 'Renton' roughly refers to her job as a prostitute, as Diasy 'rented' out her body.It s hence important that Eva herself is not a part of the play and does not have any lines, such that we can undersand that she is just a construct, but in terms of the play, may not have been real either.