Indeed she is - I saw her back in the day (1980's) when she had hits with Lilac Wine and Pearl's a Singer - both good songs - but for me 'Fool if you....' is the masterpiece from her. Just the perfect amount of yearning in the voice - it is perfection in the shape of a '45. I know she can do bluesier and rockier stuff but the reading of this song in it's own restrained way is quite brilliant.
I get that, but oddly, because I love the programme, her singing the intro to A Very Peculiar Practice is what I love most