Complex sentence: Her career led her to Tucson, Arizona, where she became an anchor at KOLD-TV, then she moved to Boston, Massachusetts to WHDH in December 2012 as a weekday morning anchor.
Split into simpler sentences: Her career led her to Tucson, Arizona, where she became an anchor at KOLD-TV. Then she moved to Boston, Massachusetts to WHDH in December 2012 as a weekday morning anchor.