Disappointed in myself

today I saw my elder one, Aditi struggling with her pomsae and sparring combinations. I felt very disappointed in myself for not making her practice enough. I was focusing only on her academics and did not work on taekwondo with her as much as I did for her green belt. I started taking taekwondo for her. Her nature is more like me. She is very shy , so first I had to do something for her that involved public performance regularly. So We chose taekwondo at King tiger as we lived very close by at the time. But she would not even try it if I did not try it. Honestly I was also too hesitant to try it. But I had to do it as I wanted Aditi to overcome her weaknesses. I had to change myself before I could  even expect a change in her. But today I felt like I let her down and lost focus on her taekwondo practice. Of what use is my learning taekwondo if I do not motivate her and practice and focus on her progress? This feeling fogged my mind ever since. Needless to say I will start focusing more on her practice. But for now I am disappointed in myself.