What should a committed girl do when she suffers from satanic whispers that push her towards sins, affect her ability to memorize the Qur'an, and make her desire people's praise, and how can she restore her purity and faith, especially with ongoing family problems?

Your feeling of inadequacy is a sign of good, and the devil's dominance indicates that he is vexed by the good you are doing, so seek refuge with Allah from him. His whisperings of disbelief do not harm you as long as you dislike them, but do not dwell on them. Your love for people's praise of your Qur'an memorization contradicts sincerity, but if it is merely fleeting thoughts that you push away, then it does not affect. Be diligent in upholding the means of steadfastness and adherence to the truth. As for your parents' disputes, pray for their reconciliation, honor them, and do not let this discord affect you in your religion and your worldly life.