Juana’s precocious intellect attracted  attention from the royal court in Mexico City, and when she was sixteen, the viceroy and his wife took her in  as their lady-in-waiting.
L'intelligence précoce de Juana attira l'attention de la cour royale de Mexico, et à l'âge de seize ans, le vice-roi et sa femme en firent leur dame de compagnie.