When Kiara left Pride Rock to go out and play, she managed to get to the border of the Outlands. While she was exploring, a mysterious figure was spying on her. And before Kiara could react, the lioness pounced on her and lowered her chest down to cover half of her body so she would run out of air. The lioness cub was tied, gasping for air and tried to fight back, but she had no room to even move her head and paws. She tries to escape with all her strength, but the old lioness was so heavy. Second by second, her strength was decreasing more and more, until she stopped moving.
Zira remained sitting a little more to be sure, and then got off the dead body

Kiara is dead.