Louisa has been looking forward to Harriet's visit for at least two weeks now (see her closing remark for this S17 entry: "for this is the second Sunday appointed").

The previous Sunday (10 Sept.), Harriet could not come over because of illness (see S9). And today (having only yesterday given her promise to come over "if fine") Harriet can not make it because of the weather.

Although the unexpected appearance of Thomas later in the day doubtless pleases Louisa, it seems not to be able to take the edge off her disappointment.