Didn't find a marriage for her, but did note the 1840 census only lists her as a "free white female" under the age of 5.
Name: Abraham Riley
Home in 1840 (City, County, State): Anderson, South Carolina
Free White Persons - Females 30 thru 39: 1
Free White Persons - Males 20 thru 29: 1
Free White Persons - Females Under 5: 1
Total Free White Persons: 3
Total All Persons - Free White, Free Colored, Slaves: 3
Sixth Census of the United States, 1840. (NARA microfilm publication M704, 580 rolls). Records of the Bureau of the Census, Record Group 29. National Archives, Washington, D.C. Year: 1840; Census Place: Anderson, South Carolina; Roll: 507; Page: 145; Family History Library Film: 0022508