It does appear that she was married sometime between 1910 and 1920, but by 1920 she was widowed with 3 children born 1910, 1913, and 1918 and all children all bear the last name of Peterson.
Sources
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/ML2B-M9P : accessed 19 February 2018), Clementine Peterson in household of Mose Peterson, Militia District 1194, Mitchell, Georgia, United States; citing enumeration district (ED) ED 114, sheet 7B, family 149, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 204; FHL microfilm 1,374,217.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MJ6G-P38 : accessed 19 February 2018), Clem Peterson in household of Bill Peterson, Maples, Mitchell, Georgia, United States; citing ED 97, sheet 7A, line 18, family 118, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 269; FHL microfilm 1,820,269.
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