I understand where Mendozanow is coming from with regards to feminine and not practical but it all depends on how well you know her and her interests and passions and in what sort of context you know her or expect to continue to know her too. If you see what I mean. A Chelsea football club strip may be blokey or sad but to Antonia De Sancha it took on a whole different meaning
So... gifts I have given to Argentine females, young and old, distant and close...
-A baking tin for jam tarts and a demonstration of how to bake a classic British jam tart
-A stoneware pudding basin which you procede to use to make a steamed syrup pudding (bring your own Lyles syrup or make do with miel de caña from the dietetica)
-A loaf tin and a huge selection of British chocolate bars (Mars, Bounty, Maltesers etc) which you then turn into the most decadent chocolate desert you have ever served with strawberries and cream. (I'll post my recipe if you want it)
-Vintage black-and-white British movies on DVD (Black and white will play on Argentine tellies. Check for subtitles/dubbing as appropriate)
-Classic groundbreaking music albums that nobody here has ever heard of. My choices would be Fairport Convention, Leige & Leif or The Imagined Village.
-Books on the Royal Family or how we live in Britain. Bookworks branches are good for that sort of thing at reasonable cost
-A complete set of the new British coinage. Can you solve the puzzle?
And something I've never given - but then I've never left the UK on the eve of a Royal Wedding - a souvenir of the forthcoming Royal Wedding.
If you want more ideas, you'll have to tell a little more about her.