This story has been updated with new information.
MEMPHIS, Tenn. — A woman shot her husband to death, injured her son, and then died after she collided head-on with an 18-wheeler in an attempt to commit suicide in Dyer County early Thursday morning, according to deputies.
According to the sheriff’s office, the incident started when Sherry Darlene Lydon was suspected of fatally shooting her husband, William John Lydon Jr., 60, while he was sleeping…