In the years after 1403, Leonor dwelt at the court of Enrique III and his queen Catalina of Lancaster, to whom she became a close advisor. The chronicle of Juan II's reign writes of Leonor that "Catalina trusted her so much, and loved her in such a way, that nothing was done without her advice” (Estow, 35). Eventually, however, around 1412, Leonor lost the queen's favour and was banished from the court, under threat of being burnt at the stake if she ever returned. She lived in Córdoba until her death in 1420.