Never
C hears all that is to come in her life from A and B. She vows that she won't become like them, ever. Ironically, she will. It's her fate which is already sealed.
Welcome Home
A welcomes her son home after 20 years. She loves having him home, but ironically she never forgave him for leaving. She has just been so lonely and desires the company.
No
A won't let B put her in diapers, she wants to keep her panties. Ironically, A hates to soil herself, which happens daily.
Happiness
C asks the two women what the happy moments of her life will be after they tell her of all the unhappiness. Ironically, the happiest moment to come, says A, is the end.
Marriage
A tells of marrying her husband, who was very wealthy and would buy her diamonds to no end. Ironically, he cheated on her constantly and their marriage was far from happy.