Emily Dickinson died after her long years of seclusion and a whole round of deaths within her close circle. It was stated that after her favourite nephew, Gib, died she became irritable and suffered from blackouts, which led her to be in a fragile state mentally and physically for about two and a half years. It's beleived that Emily died from heart failure due to hypertension. As she was bedridden for months before her death, she refused to have her doctor see her from her bedside due to her seclusion.

Emily Dickinson Museum. (n.d.). Emily Dickinson and death. Emily Dickinson Museum. Retrieved December 16, 2021, from https://www.emilydickinsonmuseum.org/emily-dickinson/biography/special-t...