Furthermore, David Boreanaz expressed his sorrow over her death. “So very sad …horrible news. RIP and prayers to her and her family,” he shared alongside a photograph of her on his Instagram story on February 26th. Alyson Hannigan, known for her role as Willow on “Buffy,” also took to Instagram on the same day to share a collection of photos featuring herself and Trachtenberg. “I am deeply saddened by the news of Michelle’s passing. She brought a loving energy to the set of Buffy. My thoughts are with Michelle’s family and friends,” she stated. The original version of this article was published on TODAY.com.