Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh

 

In most of these cases a third party like yourself or a family member should come in and talk to family. If the man is a good candidate in ethics and Deen and that he can take care of your sister properly, then that person should try to convince parents to approve.

 

If he found that this man asking for her hand is not a good candidate, then he should talk to your sister to change her mind.

 

Bottom line, the prophet said: “If one you approve his ethics and Deen came and asked for the hand of your daughter then marry them or great Fitna will happen.”

 

Almighty Allah knows best.