3) Length of time devoted to an activity.
Speaks to task persistence and also to a lack of dilettantism-- genuine commitment as opposed to "I did this to improve my resume," which is pretty important when you are looking at a kid that has almost TOO many EC's in too many different areas. She has a tendency to look "groomed/fake" on paper-- it's all genuine, but it comes off as a bit cliche.
Piano was definitely her choice of instruments-- she begged for lessons from the time she was 18mo, and I do think that she'll likely always play, but she's reached a level now where the gains are incremental, and so it's more frustrating than rewarding to "improve" her technique.
Her physique won't support more serious pursuit, probably-- and early arthritis is likely if she pushes much. So she has set aside her earlier plan to have music as a secondary major.
