Is it permissible for a female student to complete her medical studies in a specialization that requires hospital practical training, knowing that there is minimal mixing with men, and given her parents' insistence on it, and how can they be convinced if the study is not permissible, considering her intention not to work in the future except in places where there is no mixing?

The forbidden aspects of sisters studying in universities are mixing (of genders), fashion displays, cosmetics, and illicit relationships. If your studies are free from these, then there is no harm. The specialization in medicine is encouraged for committed sisters, provided it is free from fitna (temptation/strife) in study and work. The presence of female doctors contributes to the modesty of Muslim women and alleviates hardship. Therefore, you should complete your medical studies, especially concerning women and children, while observing the Islamic guidelines in dress and working in fields free from men.