I was inspired by my video find of two days ago to look for similar videos on Google, which often has longer videos and higher quality videos than YouTube, even though they're the same company. That's what I wanted. Longer! Uncut!
A less cut 18 minute performance by Varsha Uma Balabharathy, who was ten years old at the time. Actually they all seem to be 10 or 11, if their age is mentioned at all.
A video with a bit of explanation.
Finally, a video to satisfy all my xenomanic needs for a month. Most of the videos only show the solos. This one shows other parts of Bharatanatyam including some dramatic and comic scenes, as well as group dancing. I don't know what it's about!
I'm so happy!