An even more painful decision came later. She said severe abuse by her husband, including once being tied to a post, and the constant fear police would send her back to the North to face torture and prison convinced her that she needed to flee to South Korea.
She decided she had to make the risky journey alone, leaving behind the young daughter she had with her Chinese husband.
She asked to be identified only by her surname, Kim, out of fear that publicity about her past would destroy her life in the South, where she has remarried and has two other children.
Kim has lost touch with her daughter and is afraid to return to China, but neither she nor other defectors in similar situations have given up.
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Four defectors plan to travel to the United States next month to seek help from US and United Nations officials. It will not be easy.
Experts say Chinese authorities aren't likely to accept the appeals because the women were illegal residents and their relationships were not legally recognized marriages.
Their efforts to reunite with their children could be viewed as individual family problems, rather than human-rights issues requiring international intervention.
"For China, they were the ones who were supposed to be repatriated, and I wonder if China would accept their common-law marital status and take necessary legal steps.