Luminescence

An Ottava Rima for the A-Z Poetic Form Contest.

Her light shone brightly every day and night
She shared it with the others, reaching them
Her luminescence rivaled the stars' white
They all thought she was better than a gem
But then the day would come, her awful plight
That plucked her rose's petals; cut her stem
The illness never sends alerts to warn
Her candle snuffed, they all gathered to mourn