The Medieval Knight — Shirley Larson

Debra feels the universe is against her. She is young and brilliant, almost too young to be in college, where she is majoring in Medieval studies. She also wears a back brace and her unfeeling peers mock her for this. Studying is her only escape. Professor Rogen Maris takes an interest in her and Debra promptly falls in love with him. But he is out of her reach. She asks Venus to take her back to the Middle Ages. Her wish is granted but instead of the wonderful life she envisioned, she finds she has put the knight she adores in danger of losing his life.