Estranged Father's Death Raises Etiquette Questions

• A friend's wife's estranged biological father died in a one-car accident.
• The woman had been estranged from her biological father for over 30 years.
• She expressed dislike for him and had a close relationship with her late stepfather.
• The man is unsure how to respond to the situation.
• Dear Abby advises on the etiquette of the situation.