In this latter case, despite all her efforts, Louisa has no luck at all.

On Sunday, the 10th, Harriet can't come because of illness; on the 17th, she is prevented by the weather. It's a trying time for Louisa; even the unexpected arrival of her fiance Thomas Beamish isn't enough to overcome her disappointment.
I believe all the fates are against my friend's coming over, for this is the second Sunday appointed. (S17)