One said that the two things he felt immediately after leaving the side rail were shockingly high acceleration and profound regret.
Prayers for the brother and sister, and for the conversion of the restaurant patrons.
Ironically, that's zero g, exactly what is felt in earth orbit.
As to regret, I recall the ending of PAUL'S CASE by Willa Cather, "When the right moment came, he jumped. As he fell, the folly of his haste occurred to him with merciless clearness, the vastness of what he had left undone."
He pulled the trigger.In the prolonged sustained roar during the split second left him, Bloom felt as if somebody had stepped up behind him and grasped his chin and the base of his skull and lifted with both hands like a weightlifter doing a snatch lift. They kept lifting and lifting, his head was going higher and higher.
I dint mean it! he tried to yell. I take it back! I was ony kiddin! I was just showin off!
....
What a silly thing to do, he thought. What a goddam silly thing to do. You wont even be there to watch their faces.
— James Jones, From Here to Eternity.
The suicide, as she is falling
Illuminated by the moon
Regrets her act, and finds appalling
The thought she will be dead so soon
-Edward Gorey, The Fatal Lozenge