Shiva once the Dying of Sati experienced entered into a deep meditation. Without having his Strength no development was doable which triggered an imbalance from the universe. To carry him from his deep meditation, Sati took birth as Parvati. Devi Tripura Sundari is also commonly referred to as Matabari, https://www.youtube.com/watch?v=OnBTYRqg61k&t=6s