I Put into indirect speech:
1. "I want to eat what you eat", she told Bill.

"I would like to eat what he is eating", she told the waitress.

Explanation:

She told Bill that she wanted to eat what Bill was eating

i dont know doing this for points

i believe it is the first choice (1.)

because the major theme is(“both the wild and civilization have rules.”)

and also as u said,( based on what buck learns within the call of the wild, "both the wild and civilization have rules".this is true of humans within society as well.