Why a new girl in Indiana Jones the temple of doom?

In "Indiana Jones and the Temple of Doom," the character of Willie Scott, played by Kate Capshaw, serves as a new female lead to complement Indiana Jones. Her presence adds a dynamic contrast to the film, showcasing a blend of glamour and comedic relief amidst the darker themes of the story. Willie’s character also provides a romantic subplot and contributes to the adventurous spirit of the film, while her initial vulnerability evolves as the plot progresses.