I'm not the puny little thing I used to be! Yeela had been transformed by the mysterious liquid into a gargantuan mutant. The treasure hunters, who had decided to explore the ruins with extra caution due to her non-return, were shocked by the sight, and she was determined to at least frighten them in return for their harsh treatment. The new body had given her fortitude, remaining even after Renga-Menga summoned her to the Monsters' Maze.
See Hapless Yeela