It's your girl.
Every time the entire population of that planet dies, their death knoll gets a little louder due to compounded shock and dread.
Her telepathic sensitivity to time forced the little Ocampan to remedy what was going on and...
In TNG Cause and Effect, all the mundanes, hell even Data began to notice they were in a loop after a couple weeks.
It's a build up of psychic residue.
If Kes hadn't been there, or her "powers" sucked, then she wouldn't have...
Although without Kes, they never would have mounted an effective rescue when they did and where they did.
Since it was the rescue attempt which blew up the power plant.