Complex sentence: Siddiqui went to the United States on a student visa in 1990 for undergraduate and graduate education, and she eventually settled in Massachusetts and earned a PhD in neuroscience from Brandeis University in 2001.
Split into simpler sentences: Siddiqui went to the US on a student visa in 1990 for undergraduate and graduate education. She eventually settled in Massachusetts and earned a PhD in neuroscience from Brandeis University in 2001.