You're right, Mapleleaf, I am confused 
I appreciate all the wonderful suggestions but have finally decided to (drum roll)
............... ask her partner!
Then I'll choose a brand from one of the many wines mentioned.
Incidentally, as I type this I'm sipping a lovely Shiraz called Andrew Peace, £5.39 from the Co op,(well the sun is over the yardarm) but like most people I am fooled by price when giving presents and don't want people to think I'm mean.
Thanks to all for the great advice.
Cheers
(here's a glass for you Maple
)