is the primary fomenter of trouble and causer of ill-feeling at Willow Farm/Cottage.
Brian, distressed because in the heat of the moment he said something which she could choose to assume was a dig at her having had a miscarriage, mended a fence literally in the hope it would also mend fences metaphorically.
She heard the hammering and came out apparently with the sole intention of telling him that he was frightening the birds off her bird-table, thus driving him away.
Then she came out later in order to be unpleasant to him because she had found a piece of wood with a nail on it and nearly trodden on it – presumably while her foot was a few inches from the newly mended fence, since that is where a bit of fallen fence would have been. She did not thank him for the work he had done mending, just blamed him for leaving a piece of wood lying about and told him off for not tidying up properly.
Then, when he had made a very careful apology to her, she grudgingly said, “oh, all right then” when begged to start over.
Would that be start over from before she came to Ambridge and started in on him in the first place, back when she trashed his field in 2000? Can we hope she will now go away?