Read the following passage and answer the question below:
"I'm going because I've been invited," Rosaura said. "And I've been invited because Luciana is my friend. So there."
"Ah yes, your friend," her mother grumbled. She paused. "Listen, Rosaura," she said at last. "That one's not your friend. You know what you are to them? The maid's daughter, that's what."
Rosaura blinked hard: she wasn't going to cry. Then she yelled: "Shut up! You know nothing about being friends!"
Every afternoon she used to go to Luciana's house and they would both finish their homework while Rosaura's mother did the cleaning. They had their tea in the kitchen and they told each other secrets. Rosaura loved everything in the big house, and she also loved the people who lived there.
How does the theme (people can be friends despite wealth differences) and the conflict (person vs. society/rosaura's family vs. society) fit together?