I got flowers, today! Totally out of the blue, as my kids usually just don't do things like that, and I loved them. If they were an every year kind of thing, I don't know if I'd like them as well; a lot of it was the sheer surprise. On the other hand, I love cut flowers! (Sorry, Sorcha!)
If you live close by, you could always give her your own handmade coupons redeemable for any manner of chores she hates to do, that you could perform for her. My kids did that one year and it was a lot of fun and very thoughtful. Things such as mowing the lawn; doing the laundry; running errands; grocery shopping, etc.
What about a musical gift? Any CD's she's been wanting or a concert she'd enjoy going to? OR, an instrument she wants or lessons?
The pampering: massage, etc. is GOOD, though...I'd have to sya that'd be tops, even over flowers, for me.:-)