Based on the link below, she did marry a Smith.
At FamilySearch.org someone has a file with the following information, but without sources.
Blanche Gertrude /Hearrell/
birth: 6 April 1883 Neosho, Newton, MO, USA
death: 23 August 1977 Okalohoma City, Oklahoma, OK, USA
marriage: 1901 Gainesville, Cooke, TX, USA
spouse: William Alfonso /Smith/
children: Raymond Smith, Randell Franklin Smith