To be active & swift please let your have daily exercise workouts with jogging/runing,/areobics ( preferably early in morning )with high protein,vitamin rich diet(milk,egg,vegetables,salads,fruits)She is still v. young so the things should not be compelling -but entertaining.
She should be allowed to engagge herself in hobbies of her interest as well for fixed time in a day.
For concentration, pranayama along with Bramri,Omkar,Meditation
done with +ve thinking will be of great help.
hankhapushpi 2 spoons twice a day after food -along with above changes in life style will help.