 After leaving her Broadway show one evening, she had took to Facebook to recount her disastrous subway ride home.The post went viral, and caught the attention of lyricist Chris Giordano, who adapted Kristy's commute into a musical number, with composer Ryan Edward Wise.Cates was cast in the musical "Wicked" as an ensemble member and understudy for the role of Elphaba, which was played by Idina Menzel.