The Atlanta Journal-Constitution reports that the Fulton County district attorney's office said Monday that Sheila Michael has pleaded guilty to charges of evidence tampering and hindering the apprehension of a criminal. Police say Michael helped repair her daughter's damaged BMW after the 2009 crash.
Prosecutors say Michael will be sentenced after her daughter's trial.
Aimee Michael, who's 24, is set to stand trial this week. Police say she set off a chain-reaction crash near the Atlanta airport that killed a family of four in one car and a 6-year-old girl in another.
Police say Aimee Michael fled the scene. She was arrested April 23.