Verónica Castillo explains the symbolism of the heart on The Tree of Death, pierced three times by a skeletal hand. Each stab represents a different injustice: society forgetting the poor, denying them justice, and ultimately taking their loved ones despite their humble happiness and contentment. The heart stands as a poignant reminder of the violence and loss these families endure, often left with only a shoe, a dress, or some small trace of the women who disappeared.