That's a very good description of a lot of Mrs Norris' behaviour. There's a lovely example when William is telling traveller's tales:

"...though Mrs. Norris could fidget about the room, and disturb everybody in quest of two needlefuls of thread or a second–hand shirt button, in the midst of her nephew’s account of a shipwreck or an engagement, everybody else was attentive.

From the same paragraph but on a different tack, did anyone notice the irony in Lady Bertram's reaction to William's tales:-

"...even Lady Bertram could not hear of such horrors unmoved, or without sometimes lifting her eyes from her work to say, “Dear me! how disagreeable! I wonder anybody can ever go to sea".