Do anyone else react when Mrs Bennet complains abot the Collinses being next in line for Longbourn.

"Well, if they can be easy with an estate that is not lawfully their own, so much the better. I should be ashamed of having one that was only entailed on me" (my emphasis)
It shows so well that Mrs Bennet has no grasp on what an entailment means. I donīt think she is ashamed at all even though she claims that she would be. Alison Steadman did a great job bringing Mrs Bennets quirks alive.