] And out of this she would supplement the Wickhams:
] `Such relief, however, as it was in her power to afford, by the practice of what might be called economy in her own private expences, she frequently sent them.'

] I get a definite feeling of irony going on here, in the phrase `what might be called economy in her own private expences'. But what JA is being ironical about, I don't know. Perhaps Elizabeth was doing it very discreetly, so her husband didn't find out?

...that she would do this quietly - not exactly keeping it secret from her husband, but not making it clear how often she helped them out, either!