It looks like the ancestry sources are the marriage records for her children. The first one for Vicente: https://www.ancestry.com/sharing/21903887?h=6a7692&utm_campaign=bandido-webparts&utm_source=post-share-modal&utm_medium=copy-url
With the original source being: México, Baja California and Baja California Sur, registros parroquiales, 1750-1984.. Parroquias Católicas, Baja California y Baja California Sur (Catholic Church parishes, Baja California and Baja California Sur).Courtesy of the Academia Mexicana de Genealogia y Heraldica and Archivo General de la Nación. Register Type and Year: Register Type and Year: Matrimonios 1822-1876, 1909-1913, 1918, 1934-1936.
The second being for Domingo: https://www.ancestry.com/sharing/21903922?h=4b5a7c&utm_campaign=bandido-webparts&utm_source=post-share-modal&utm_medium=copy-url
Original source: México, Baja California and Baja California Sur, registros parroquiales, 1750-1984.. Parroquias Católicas, Baja California y Baja California Sur (Catholic Church parishes, Baja California and Baja California Sur).Courtesy of the Academia Mexicana de Genealogia y Heraldica and Archivo General de la Nación. Register Type and Year: Matrimonios 1822-1876, 1909-1913, 1918, 1934-1936