New Revised Standard Version
Now when Athaliah, Ahaziah’s mother, saw that her son was dead, she set about to destroy all the royal family of the house of Judah.

Contemporary English Version
As soon as Athaliah heard that her son King Ahaziah was dead, she decided to kill any relative who could possibly become king. She would have done just that,

New American Bible
When Athaliah, the mother of Ahaziah, saw that her son was dead, she began to kill off the whole royal family of the house of Judah.

Douay-Rheims Bible
For Athalia his mother, seeing that her son was dead, rose up, and killed all the royal family of the house of Joram.

For Athalia his mother, seeing that her son was dead, rose up, and killed all the royal family of the house of Joram.

Athaliah

2 Chronicles 22:2-4 Ochozias was forty-two years old when he began to reign, and he reigned one year in Jerusalem, and the name of his mother was Athalia the daughter of Amri. . . .

2 Kings 11:1 Now Athalia, the mother of Ochozias, seeing that her son was dead, arose and slew all the royal seed.