In reply to bowls:
So she's done a little summer walking in the likes of the malverns.
And you are seriously thinking about taking a rope? Ice axes? Crampons? And where are you going to go to ensure she can safely use them beforehand?
I'd be thinking about somewhere lower down, snowy and not strenuous with views. Remember, great views from the tops of mountains are mostly of more mountains. My wife doesn't particularly like the views from the tops for that reason. But she loves the views from smalle5r hills because you can see things she enjoys such as villages, towns, valleys, fields, rivers and so on. Don't forget what appeals to you may not appeal to her. If she's not been into the mountainous areas of Wales then even being lower down is going to appear stunning to her.
As for not wanting to scare her I'd not bother take a rope 0 or crampons - or the axes. After seeing that lot she will be scared.