Felipa Garza, according to Dorace Goodman, died an infant.  She has been referred to as the "blue baby" as she, very sadly, would turn blue, undoubtedly from a serious heart defect. 
Los Garza del Rancho La Violeta
The history of the ranch and its founders:
Don Martiniano Garza Flores and
La Doña Paula Villareal Benavides de Garza