The Colonel's Genius Wife

Modern mechanical engineering student Elara Quinn transmigrates to 1957 into the body of a capitalist's daughter, unlocking the system's spatial cheat. She fights back against her scumbag father and stepsister, empties her ancestral property, and donates the family factory to the country. Afterwards, she follows her husband, using her spatial cheat and knowledge from her past life to help build a Technological Superpower in this era of reconstruction.