I can't imagine that amount of faith and devotion, and yes, love

Comatose since Christmas 1969: A tale of unconditional love and miracles

Colleen O'Bara bathed her older sister, Edwarda, and fixed her hair. She fed her through a feeding tube like she'd done countless times. It was going to be a good day, the day before Thanksgiving.

With her morning routine complete, Colleen planned to fetch a cup of coffee. She bent down and kissed her big sister, told her she'd be right back.

"She gave me the biggest smile she has ever given me in her life," Colleen recalls. "Her face was aglow. There was a sparkle in her eyes."

But just then, Edwarda closed her eyes.

For 42 years, her family held vigil. They awaited the day Edwarda would awake, the miracle that never came.

At the age of 59, Edwarda died, believed by medical experts to have lived longer than anyone in a comatose state.