The jury in Columbia found Zinah Jennings guilty of unlawful conduct and a judge sentenced her to the maximum 10 years in prison.
Jennings showed no emotion as the verdict against her was read in court on Friday.
Jennings’ son, Amir, was 18 months old when he was last seen in November. Police say Jennings lied to them about where the boy is. Jennings says she left the boy somewhere safe but won’t give details.
Prosecution witnesses testified the young mother said she needed a break from the boy. Jennings’ mother said she doesn’t believe her daughter would have harmed him.