That’s not how any of it works

(scene opens in parlor sweatshop)

Gamma: Mom, how much money do you have?
Me: (tracing out patterns) Not a lot. Why?
Gamma: Well, maybe you and daddy and I could put all our money together and buy a foster child so I can have a sister.
Me: (stops tracing) That’s not how it works, sweetie.
Gamma: But I need a sister. I’m all alone in this house with all these boys. Don’t you want me to have a sister and a friend?