In reply to treforsouthwell:
This may be a bit further south than you wanted, but you could try Briancon area near the Ecrins ( southern French Alps)
We have about 25 via ferratas in this area, at all levels, there are ones like the one at puy st Vincent which are designed for kids it is a mix of wooden ladders and bridges, mixed with the more traditional rung system a great start for little ones, and the some route that are a little harder but still with the rungs set for young people, and all the way up to long almost alpine feeling ones, even the longer routes don't have big long walk ins, I think the longest is under an hour, most 5 - 20 mins
So you could start easy and move up as she feel comfortable, there is a free via ferrata guide booklet that covers all the ones in the area, you can pick it up in most tourist info or outdoor shops.
Bing the southern alp we get generally more settled weather, briancon claims 300 days of sunshine a year, I think this is over egging it but it is good.
For flights the best airport is Turin, but if you wanted to fly in to France Grenoble, Lyon work to?
Other things to do here with kids,
if it is hot there are quite a few lakes for swimming in,
you can take a walk to the glacier blanc refuge at 2500 meters very suitable for kid and in a high Alps setting with the glacier blanc along side, there is plenty of easy climbing to, this area has over 3300 routes over four rock types so something for every one,
visit some of the old forts at briancon and there is the marmot road where you can go and watch some times Stoke the marmots, kids love that.
If you would like any more info please get intouch rob@dream-trails.com