(Strip Number 6002, Original Publication Date, 18 November 1981)
Panel 1: We start things off with Mrs Baird and Elly drinking a cup of tea; Thelma is going a mile a minute about something that Elly either can't get a handle on or doesn't care about. This is represented by having the filler words "Yack-yack-yack" interspersed with normal English. Based on the fact that said real words are "and of course" and "and then I said", she's sharing an anecdote about some minor irritation that Elly can't identify with.
Panel 2: Elly continues to not listen when Mrs Baird talks about something that baffled and repulsed her.
Panel 3: As Thelma leaves and says how nice it is to have a neighbor to talk to, Elly stands there with a plastic smile.
Panel 4: She then thought-bubbles that she doesn't think she listened.
Summary: Well, that goes without saying, doesn't it? As I said, Elly tends not to listen to conversations that she doesn't find worth her time to listen to. This is especially annoying because it's clear that Mrs Baird thinks that she has a better relationship with Elly than is actually the case.
ETA: Speaking of her being amazingly self-referential, she wants to remind us that North Bay gets kind of cold in November.