In Chapter 3 of 'Winter is Coming,' Eowyn expresses her desire to become a criminal mastermind, causing concern for her mother Sansa, who wishes to guide her toward more productive pursuits. As Sansa navigates potential suitors for Eowyn amidst difficult circumstances, Eowyn struggles with feelings of frustration over her limited opportunities and the lack of a proper education. The chapter highlights familial challenges and the quest for stability in a harsh environment.