Austen Said:

As long as they lived, no exertions would be necessary, their home might be hers for ever; and for their own comfort they would have retained her wholly; but this would be selfishness:—what must be at last, had better be soon.

She had never been quite well since the time of their daughter's marriage; and till she should have completely recovered her usual strength, they must forbid her engaging in duties, which, so far from being compatible with a weakened frame and varying spirits, seemed, under the most favourable circumstances, to require something more than human perfection of body and mind to be discharged with tolerable comfort.

they depended more on a few months spent in her native air, for the recovery of her health, than on any thing else.