Gabriela Farfan, 19, a West High School graduate and now a freshman geology major at Stanford University, will attend tonightâ??s State of the Union address as a guest of first lady Michelle Obama. While in high school, Farfan spent two years working with geology professor Huifang Xu in his UW-Madison lab and credits the universityâ??s geology museum for sparking her interest in minerals at age 7, according to UW-Madison.