Pixie, in looks (physically) and what I read about her reminds me so much of an artist I knew at school. I had not realised what a genius she was until I saw her 'work book' for the school play; 'Orpheus in the Underworld' - she was the costume and set designer.
In her book was little paintings of each costume from various views, the costume on the characters in various poses with notes, scene paintings of the costume and set effects; then all the costume patterns laid out with measurements and hints on making them, suggestions for material patterns (with little squares depicting the type of pattern or material required , painted ... heaps of text written in little block letters, each hand painted with a tiny fine paint brush with the more significant text having each letter dual coloured with a 'shadow'. ... Pages and pages and pages ... with all the text hand painted. All within a few months ... from a teenage girl ... doing all these other artworks at the same time, whatever else she was doing and studying for her final exams.
She was extremely eccentric and always carried a folded frilly parasol and a frilly hankie that she used to 'accidently drop' on the floor when she went past boys - who all thought she was absolutely mad and wouldnt go near her - or stomp or spit on the hankie ... except me, I would rush to pick it up and hand it to her "You dropped your hankie M'am". Then she would take it in hand and and use it to shield her lower face feigning embarrassment - considering the time and place ... totally crazy ... but an absolute genius.
I would estimate that she would have been able to finish a card, painted and coloured similar standard and technique, to a RW card, in a couple of hours, probably less. I painted a series of Enochian Tablets it took around 98 hours all up, people used to look at them and think it would have taken a LOT longer.
Also, output was different then - look at all the Books written by people like Waite and Crowley ... more 'time' was available then ....... no internet, phones, television ... all that stuff we seem to now spend 1/2 our lives with.