In All That Teethes Within, poet Kari Gunter-Seymour translates the poignant complexity of loss into words. This exploration of heartache is layered with the poet's Appalachian identity and overflows with sadness and anger toward the forces that cause societal and environmental damage in the region. The poems mourn a loved one's sudden passing, opportunity missed due to poverty or gender inequality, and the piece of one's identity that vanishes or fades with age.

Gunter-Seymour's interrogation of grief and destruction quietly weaves in elements of nature—"Breezes whistle like wisps of memory / inside clusters of hemlock"—to counter profound pain. Small joys found in friendship, the land, grandchildren, and wildlife round out this collection. All That Teethes Within reckons with the incomprehensible reality of a sibling's suicide, serving as a guide for survival and a call to speak the truth of our anguish and our rapture.