LUBBOCK — Lubbock County sheriff’s investigators said 18-year-old Holly Jeffcoat was stabbed to death before her body was found Wednesday morning in a northeast Lubbock County home. The Idalou High School student appeared to have suffered multiple stab wounds, according to Lubbock County Sheriff’s Office, which is investigating her death as a homicide. “We have spoken and are continuing to speak with several people,” said Lt.