Lizzy realized the lack of Mr. Collin's (as did the author just now) during the entire previous exchange and enquired of her father,
"Mr. Collins mentioned his intention to seek your blessing on his perceived engagement. Wherever has he gone?"
"Oh, is that what he came in here for? He was making little sense as verbosely as is his wont so I sent him away."
"Sent him away?! Oh Mr. Bennet, how could you?" His wife burst forth, shocked by this news out of her nerves over staying behind. "You know how much I respect him to treat him with such dismissiveness!"
"Respect him, do you? Rest assured my dear he seemed to rather be in awe and used to being sent hither and thither. Reminds him of Hunsford, eh Lizzy? But truly I could make no sense of his words and told him that under no circumstance was I to be disturbed again before supper, during which we can endeavor to lead him to come to our plan as if it were his own."