In Mortal Kombat 9 (2011 version) for the PS3 and Xbox 360, each character has multiple fatalities that they can perform at the end of the match.
This is the list of fatalities, and the babality and stage fatality for Sheeva.
These can be unlocked and added to your moves list by performing them in either Arcade Mode or Versus Mode.
Check out these complete fatality guides for more finishing moves:
Fatalities and babalities for Mortal Kombat on Xbox 360
Fatalities and babalities for Mortal Kombat on PS3
Sheeva’s Fatalities & Finishing Moves
Xbox 360
Lend A Hand — Forward, Back, Forward, Back, B within sweeping distance
Stripped Down — Forward, Down, Down, Forward, X within sweeping distance
Babality — Down, Down, Down, Back, B in jumping distance
Stage Fatality — Down, Down, Down, Down, X at close range
PS3
Lend A Hand — Forward, Back, Forward, Back, Circle within sweeping distance
Stripped Down — Forward, Down, Down, Forward, Square within sweeping distance
Babality — Down, Down, Down, Back, Circle in jumping distance
Stage Fatality — Down, Down, Down, Down, Square at close range