On one occasion having just finished a book Dorothy went off to Arran on holiday to a chalet hotel which had one fax machine at the reception desk. As a result he lost his virginity twice. Not just sex but fashions have changed over the years. Cruelty to animals for instance is looked upon rather differently. Sentimentality is not allowable so much now either.
Game of Kings is set in aspic, but the JJs are surrealistically in their periods.
Readers have to be aware when the various books were written to understand how attitudes and fashions have changed. Because of the unusual nature of the two series with the later-written Niccolos preceding the time of Lymond, Richenda, who doesn't know what the ending is to be, has the flow going forward whereas Dorothy has it going backwards. Consistency is very difficult. Regarding who does what, Dorothy assumes she will have to check history since she does so much original research which often hasn't been tackled by historians. She always tries to visit the scene to check the terrain.