Another aspect of this
Written by Louise H
(5/2/2007 1:13 p.m.)
in consequence of the missive, Valuable neighbors, penned by Robbin
I think Lady Lucas doesn't make Mrs. Bennet feel inferior, as she might if she was very clever. A neighbor who made you feel inadequate wouldn't be valuable. To me, this line points to insecurity on Mrs. Bennet's part.