Updated

A Dallas mother is accused of forcing her 4-year-old son to ingest ant poison after telling her three children that she planned to kill them and herself.

Paw Eh, 31, was arrested Saturday and has been charged with attempted capital murder.

The Dallas Morning News reports that Eh's 12-year-old daughter told investigators she watched her mother fill a spoon with ant poison and water then force it into her 4-year-old son's mouth. Police say Eh also tried to poison the daughter and a 7-year-old son, but was unsuccessful.

The 4-year-old child was being treated at a hospital, where his condition improved from critical to stable on Sunday.

Eh is being held in the Dallas County jail on a $500,000 bond. She didn't have a lawyer as of late Sunday.