(((((((((((googley)))))))))))
Maybe you could just make up a story of your "ideal" family values? A family you'd like to have someday?
I'm sorry this is causing so much distress. How insensitive &/or ignorant your prof must be. LOTS of people come from less than ideal families--to put it nicely. Shame on her for not realizing that this assignment could be quite difficult for probably a lot of people in her class.