I think the Cairngorms might have got a mention. Here's a link Cairngorms National Park The first time Rob and I went to Aberdeen, we climbed Mither Tap, from the Bennachie Centre. It was a bit challenging, but the 360 degree views from the top were worth it! Mither Tap

Another thing that springs to mind is the gardens Scotland's Garden Scheme We visited Pitmedden Gardens which were beautiful!

If she likes fish, she has to try Arbroath Smokies - in fact there is an awful lot of wonderful fresh and smoked seafood to be had in those parts. On the subject of food, we developed quite a taste for Haggis. These are readily available in the supermarkets, ready to be heated up in the oven, and make a lovely meal with neeps (turnip mash) and tatties (potato mash) and gravy. We even found a place called Taste of Scotland in the food court in one of the Aberdeen shopping centres, which did a really good haggis, neeps and tatties. We like it so much, we brought a few down to Somerset when we moved and put them in the freezer. They haven't escaped yet ;)