word choice - How do you say "Please tell your wife to get well soon"?

How do you convey that you wish someone's wife (or husband, mother, brother, etc.) to get well soon? I understand that you say お大事に if the person you speaking to directly is the one who is not well. What if there's a degree of separation, do you simply say "お大事にと伝えてください"?

宜しくお願いします。