From familysearch.org. Hattie Schindler in 1910 is living in Galveston with parents Emile and Freda. In 1920 she is living in Galveston with grandfather George Richnow. So this may possibly mean that Freda Schindler, mother of Hattie, was born a Richnow.
Or is this a different Hattie?
United States Census, 1920
Name: George E Richnow
Residence: Galveston, Texas
Estimated Birth Year: 1864
Age: 56
Film Number: 821806
Digital Folder Number: 4390414
Image Number: 00080
Head George E Richnow M/56y
Spouse Clara Richnow F/58y
Grand dau: Hattie Schindler F/13y
Grand dau: Clara Richnow F/6y
United States Census, 1910
Name: Emile Schindler
Birthplace: Texas
Residence: Galveston Ward 6, Galveston, Texas
Family Number: 96
Page Number: 5
HEAD: Emile Schindler M/25y TX/GER/GER
Spouse Freda Schindler F/24y TX/GER/GER
Child Walter Schindler M/5y b. TX
Child Hattie Schindler F/3y b. TX
Child Mary Schindler F/1y 8m b. TX
Brother Thomas Schindler M/21y b. TX
Sis in Law Annie Schindler F/17y b. TX/TX/TX