Mrs. Bennet expected Jane to arrive dry at Netherfield but be prevented from returning by the rain later in the day.
"No, my dear, you had better go on horseback, because it seems likely to rain; and then you must stay all night."
Jane was therefore obliged to go on horseback, and her mother attended her to the door with many cheerful prognostics of a bad day. Her hopes were answered: Jane had not been gone long before it rained hard.(Ch. 7)