Tanda [The seer of life and death]

Tanda was born with the ability to see people's time. Everyone, children, teens, adults, elders, everyone had a clock above their heads that counts down to their deaths. These clocks and jump and change depending on a person's actions. Tanda never tried to change them, she never thought she could.
When her close friend nearly got hit by a truck, Tanda pulled her to safety, changing the clock. Tanda's own clock suddenly vanishes. Now Tanda must learn the consequences of changing someone's time.

This is a short story. If it does well, I might expand the idea to a novel.