Nguyen Thi Yeh was a female Human of Vietnamese descent in the 23rd century, and the mother of Mai Duyen Trinh.

Following Trinh's accident, she cared for her daughter until her death. For a period of about a year, she wrote occasional letters to Hikaru Sulu to update him on Trinh's worsening condition. (TOS novel: Allegiance in Exile)

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