I saw her presenting the other day, my 2 9 year old sisters were watching and my 4 year old brother. I was a little shocked for a couple of seconds, only because its not what you expect to see. But they didnt seem to care, i asked them what they thought and they just seemed to express sorrow for her, but nothing remotely suggesting it had freaked them out.
I think its a good thing that shes on there, it shows that anyone can achieve anything they want, without fitting standards. Although they probably didnt see it like that, it at least makes them feel less shock/confusion when it comes to seeing disabled people around and lets them know that they are as normal as anyone else.