Mary Cassatt's painting usually depicted domestic setting, Of a world Mary was restricted ( since she was more of a respectable woman.) She often combined certain influences of Japanese art along with some of her own. I guess her meaning changed every few paintings. For example "The Childs Bath" its said it shows "the Dignity of motherhood" Hope that helps (:
There are the purposes to inform, and to persuade.
"Longing" is another word for: (C) NOSTALGIA
When you are nostalgic about something, you long for something or someone in the past. For example, a person who migrates to another country might become nostalgic for the foods and culture of his own country as he tries to settle in.