Highfield Princess is out of Pure Illusion (Danehill), a dual winner and the dam of Cardsharp (Lonhro), a Group winner and Group 1-placed in England. Cardsharp won the Gr.2 July Stakes and was placed in the Gr.1 Middle Park Stakes, the Gr.2 Gimcrack Stakes, the Gr.2 Richmond Stakes and the Gr.2 Norfolk Stakes. Her other winners include Ghost Army (Elusive Quality), History Book and Irradiance (both Raven's Pass), who won twice each, and Highfield Viking (Aclaim), a winner once. Pure Illusion has six winning siblings, among them Well Spoken (Sadler's Wells), the dam of Chrysanthemum and of the Listed-placed Spoken To Me.

Second dam Saintly Speech (Southern Halo) won the Gr.3 Princess Margaret Stakes. She is also the second dam of Chrysanthemum (Danehill Dancer), winner of the Gr.3 Park Express Stakes and the Gr.3 C. L. Weld Park Stakes, whose produce includes the sire Cunco (Frankel), winner of the Gr.3 Sandown Classic Trial, and his full sister Maxux, winner of the Gr.3 Denny Cordell Lavarack & Lanwades Stud Fillies Stakes.

Third dam Eloquent Minister (Deputy Minister) won three Listed races and was placed at Group 3 level.

Saintly Speech is a half-sister to Woodland Melody (Woodman), winner of the Prix du Calvados, then a Group 3, and to Maruka Diesis (Diesis), a Listed winner in Japan and later a sire. Woodland Melody is the dam of the Listed winner Shady Reflection (Sultry Song) and the grandam of Cary Street, winner of the Grade 2 Marathon Stakes in the US.