That is extremely well written and clear. Also very natural, there is just one minor little detail.
She has been able to understand 79% of the LISTENING EXERCISE including complex structures and intermediate vocabulary, which is NOTICEABLE; it means that she understands different verb tenses but she hasn't been trained to make them part of her regular speech.
Notable = deserving attention for being good,( not for being bad).
Noticeable = to notice because it is either good, improving, bad, or different from the norm.