In revenge for Runar killing other saber-tooth cats, Soto, the leader of a group of saber-tooth tigers, attacks the tribe in an attempt to steal Roshan for his meal. Nadia is able to rescue him just before Diego snatched him, but is cornered by Diego at the edge of a waterfall. Seeing no other options, she jumps, and Diego returns empty-handed. Injured and exhausted but alive, she swims to the river bank where she meets Manny and Sid. With her last remaining strength, Nadia nudged her son to the two in hopes that they could be entrusted with her son. The scene moves away from her, but when it returns a few seconds later, she is nowhere to be seen with Sid commenting on her disappearance in confusion. Sid then takes Roshan and leaves with Manny.
Her exact fate is unknown as she was never seen afterwards, although it can be presumed that she drowned in the river and died due to exhaustion. Either that, or she sustained some level of critical injury from the jump of the waterfall, leading her to slowly die, and when she sent her son to manny, she was contempt to pass away in peace.