Read it through once

In revolving Lady Catherine’s expressions, however, she could not help feeling some uneasiness as to the possible consequence of her persisting in this interference. From what she had said of her resolution to prevent the marriage, it occurred to Elizabeth that she must meditate an application to her nephew; and how he might take a similar representation of the evils attached to a connection with her she dared not pronounce. She knew not the exact degree of his affection for his aunt, or his dependence on her judgment, but it was natural to suppose that he thought much higher of her Ladyship than _she_ could do; and it was certain, that in enumerating the miseries of a marriage with _one_ whose immediate connections were so unequal to his own, his aunt would address him on his weakest side. With his notions of dignity, he would probably feel that the arguments, which to Elizabeth had appeared weak and ridiculous, contained much good sense and solid reasoning.