Neighbour said my Mum's fence between them was looking a bit iffy, but he was happy to get someone in to sort and pay for it.
Looks like they've had other work done and the 4ft fence has been replaced with a 6ft fence (which my Mum wouldn't have chosen). In his defence, her garden is pretty overgrown, so I can see why he's chosen a 6ft fence but we both suspect her fence was ok.
She's now feeling a bit guilty and says she should pay for it as it's hers.