In New Spring, we see a passage where Gitara Foretells Rand being born on the slopes of Dragonmount. Then, she immediately dies:
"He is born again!" Gitara cried. "I feel him! The Dragon takes his first breath on the slope of Dragonmount! He is coming! He is coming! Light help us! Light help the world! He lies in the snow and cries like the thunder! He burns like the sun!"
With the last word, she gasped, a tiny sound, and fell forward into Moiraine's arms.
So she has the Foretelling, and suddenly dies? We know she as well as other people like Elaida have had Foretellings before...why did this one kill her?