At the end, Laura asks for a railroad ticket to Walnut Grove. Walnut Grove has no railroad depot. She could only ask for a destination close to Walnut Grove that has a railroad depot.
Laura could have gone over the professor's head and petitioned the university for academic grade forgiveness to get the perfect score she earned. Not to mention reporting the sexual harassment.
At the end of the episode when Laura and Eliza Jane are saying goodbye at the train station, Laura says her train leaves in an hour. But both parties are headed to Minnesota. There is no need for them to be on separate trains. It would be difficult to imagine multiple trains leaving from Arizona to Minnesota on the same day in that era.
Also, Laura asks for a ticket to Walnut Grove, but there us no train that runs to Walnut Grove throughout the series.
Also, Laura asks for a ticket to Walnut Grove, but there us no train that runs to Walnut Grove throughout the series.
Set in 1886 (Laura is early in her pregnancy; Rose Wilder was born in December of that year), Ralph Waldo Emerson is portrayed. Emerson died in 1882.
Modern street lights and buildings can be seen in the background at 35:35 when Laura is speaking to Mortimer on the steps to the academic building.
Laura and Eliza Jane would be taking the same train back to Minnesota from Arizona.