Nice Tiffany piece? They have sterling silver braclets and matching necklaces, each for around $200, that can also be engraved. Most women love to get the little blueish green Tiff boxes, so you can't go wrong there.
Tiffany & Co. | Category | Jewelry | Silver Bracelets | United States
Also, a spa day gift card is usually well received, you know, for a mani, pedi, facial, massage, etc...
Flowers...are a must. At least a dozen of her favorites.