One of the final phone calls Christine Jeanette McRobbie made was to tell her friends she was heading home to Taupo early, while the sun was shining.
Hours later, the 68-year-old died when her red Suzuki Swift crossed the centre line and smashed into a vehicle heading north along Gordonton Rd at 4.15pm on Sunday.
Friends said the volunteer and casual retail assistant was a careful driver and are putting the crash down to a blackout due to her "reasonably serious" diabetic condition.
Marjorie West, 89, from Morrinsville, died at the scene and Mrs West's 62-year-old son and 57-year-old daughter in-law are in Waikato Hospital.
Auckland couple Bob Jamieson and Barbara Kelly were getting ready for Ms McRobbie to visit when she cancelled on them.