How old is Annie Oakley in the play Annie get your gun?

In the musical "Annie Get Your Gun," Annie Oakley is portrayed as a young, talented sharpshooter, but her exact age is not explicitly stated in the script. Historically, Annie Oakley was born in 1860, and the events of the play are set in the late 19th century, so she is likely in her late teens to early twenties during the main events of the story. The focus of the play is more on her skills and character than her age.