Давид долгое время досадовал на Дору и думал, что она могла бы проявлять некоторый интерес к хозяйству, но потом понял, что он не должен требовать от 'нее того, чего она не может делать.
David has long been annoyed at the Douro and thought it might be of some interest to the au pair, but then realized that he should not ask ' her of what she can do.
David has long vexed with Dora and thought it might be of some interest to the economy, but then I realized that it does not have to require 'her what she can not do.
David for a long time, feeble at the Douro - and thought that it could be some interest in agriculture, but then realized that he should not require the 'it what it could not do so.