Anchorage police say 28-year-old Esther Edwards-Gust was arrested on a warrant issued from Barrow on Monday. She is charged with two counts of felony assault.
Her boyfriend, 28-year-old Richard Tilden Jr., also has been charged.
The Anchorage Daily News says court records say that Edwards-Gust is a public school teacher in Barrow.
She was released from jail after being arrested. Tilden remains in the Barrow jail on $100,000 bail.
Edward-Gust's 3-year-old child died on Saturday. A 1-year-old baby who also was beaten remains hospitalized at the Alaska Native Medical Center in Anchorage.