Well I looked at a couple of those videos, and she is obviously a bright little girl. But I had kids who did similar things at similar ages and I never even gave GT issues a second thought. If she's home with her full time, I'd just follow the little girl's lead and interests. If she's a happy kid, I wouldn't worry about it too much until she's looking at a full time school or daycare situation. She sounds a little overwrought over the situation. I always gave my kids free range on the library. Kid's section anyway, but even adult materials if they were interested.
I have to admit I have a couple videos of DS on you tube for grandparents and a couple relatives (nothing approaching this level! A couple piano recitals). I just discovered you can make them private! Hooray. It is a nice vehicle to share videos with distant friends and relatives without mailing them a huge file.
