Peter Hebblethwaite also admitted earning £508,000 last year including bonuses.
The 49-year-old mental health advocate said she had to "constantly" adapt as the wife of a politician.
A fortnight ago Charlie Marshall was an ordinary point-to-point jockey, competent, clearly a bit underrated, but not rocking any championships and, in that world, best known for being the brother of Izzie Marshall who is in a tight tussle with Gina Andrews for this season’s ladies title.