reputation

Q: Girl's choice in marriage is final though violating other family and status equality as given in fiqh of marriage. Allah orders children not to cause grievous hurt to the heart of parents. Allah says, he does not delay punishment to such children in this very world. So how can such marriages be happy? Is not the marriage with the approval of both the girl and her parents more meritorious and rewarding? And are parents entitled to say to the girl that if she's bent upon her own choice, she should do it without parents taking any part in it as they aren't accepting her choice?