The writer, when he is also an artist, is someone who admits what others don't dare reveal.
On the other hand, I don't understand the enthusiasm for everything in the antique shop that Grandma threw out. There, the sense of quality has declined; otherwise Grandma wouldn't have thrown it out.
Although this is a fictitious story the history is real. You don't want to re-write history but you certainly want to portray events and characters as realistically as you can.