Short answer
Parents should try to understand the reason rather than immediately treating rejection as disobedience.
Islamic Guidance
What Islam teaches
Family relationships should be based on kindness, consultation and justice. A marriage decision has long-term consequences, so genuine concerns should be heard seriously.
Practical Guidance
What you can consider
Ask whether the concern is religious, personal, practical or based on misinformation. Discuss it calmly and seek trusted advice when needed.
Sources
Qur'an 42:38; Qur'an 49:11.