You must have skipped over the part were she tried living on the food ration at the time?
No, but I did skip over the part where this woman lives in England. It’s a lot easier to ride bikes in many towns there. Nonetheless, people did drive cars there in 1939. Of course my mother was born in 1915 and never had a driver’s license, so...
Sitting at my desk, fielding the Monday-morning password (and other technical) calls, her choice looks pretty good to me! ;-)