Excellent rider, passionate about horses, especially Vitória, born from Gregório´s second marriage, Mossoró´s sister, with whom she gets along very well.

Diana always confronts her father because he forbids her to ride horses. Diana will fall in love with Artur and suffer, thinking she committed incest because she doesn´t know that Gregório is not Artur´s biological father.

She will fight with all her strength to keep Artur from destroying her life´s passion: the Altacyr Ferreira Ranch.