You, I and the overall majority here are relatively old*, in the perspective you just put it, without a doubt.
Asian girls look younger in general, I agree. Just from Lisa's pictures, and of the three other girls in her band, I too would say between 13 and 15.
This is all relative.
When I first saw Dr. K's avatar and his first post and first picture of his rig, it slightly crossed my mind that she could be one of his daughters.
But I tried googling first, and I found out who she was; Lisa from the Black Pink's band: https://en.wikipedia.org/wiki/Black_Pink
She's very pretty (20-years old), and she is not particularly my music genre (after watching some youtube videos), but that's ok, that's more than ok as a cool avatar with a special young cachet of innocence and peace. The system is well organized, peacefully, passionately and discretely emphasized. The overall effect is pleasant, thoughtful, original, ...I just like it all. This is all bonuses to us. ...It's the music that drives us, that makes our wheels turning. It's all electrifying.
If you observe carefully you can have a fair glimpse of the music genres that makes him orbiting around. I'd say some jazz, some classical chamber, some new age, etc.
* Between 40 and 80 (average 60).
