I expect it is virtue signalling but as somebody else pointed out (sorry, can't remember who) she is also living at LL now and having to drive to and from The Bull, so much less chance of drinking.
I did enjoy tonight's episode. Sorry, Elizabeth, but that is just exactly what both you and Nigel would have done at that age - I know, I was listening then!
I was also quite sure that Susan would overhear Tom and delighted to get that right!