Williams said she could not explain why 23-year-old Latina Williams killed the two women, then turned the .357-caliber revolver on herself and committed suicide.
"In this tragedy, just like you, we have many questions but no answers. As Latina's mother, I will not try to rationalize or make excuses for her action," said Williams, of Centreville, Miss.
Police said they have not determined the motive for the shootings that killed Karsheika Graves, 21, and Taneshia Butler, 26, both of Baton Rouge. About 20 people were in the emergency medical technology class early Friday.
Police Sgt. Don Kelly said Williams entered the room, spoke with the instructor and left, then returned through another door and fired six rounds, killing both victims. Kelly said she then reloaded and shot herself in the head.
In her statement, Jennie Williams said: "I pray God will give you strength to come through this. I will be haunted to the end of my days for what my child has done."
Classes tentatively were scheduled to resume Wednesday, said Jim Henderson, vice president of the Louisiana Community and Technical College System.
The school of about 800 students - one of two LTC campuses in Baton Rouge and among dozens around the state - offers classes in a dozen subjects including early childhood education, practical nursing and welding.
