For those who genuinely cannot afford a textbook, the best solution is not piracy but seeking out high-quality, free, legal textbooks on elasticity and plasticity. Many universities and authors publish OER materials. Consider searching for open-source textbooks on these subjects; while they may be different from Helena's book, they can provide the same foundational knowledge without any legal or security risk.
Designed for undergraduate and postgraduate students in civil, mechanical, and aeronautical engineering, the book balances theoretical foundations with practical applications.
Problems related to beams, torsion, thick-walled cylinders, and plates.
Setting the story in a futuristic or academic environment makes sense. Maybe Jane is a researcher facing a critical challenge. The patched PDF might be a breakthrough paper or a key to solving her problem despite obstacles. The "free download" aspect could tie into themes of open access versus proprietary knowledge.