Answer by taking a quote from the following article:

Emily Elizabeth Dickinson (December 10, 1830 - May 15, 1886) was an American poet. Dickinson was born in Amherst, Massachusetts. Although part of a prominent family with strong ties to its community, Dickinson lived much of her life in reclusive isolation. After studying at the Amherst Academy for seven years in her youth, she briefly attended the Mount Holyoke Female Seminary before returning to her family's house in Amherst.

Dickinson spent seven years at the Academy, taking classes in English and classical literature, Latin, botany, geology, history, "mental philosophy," and arithmetic. Daniel Taggart Fiske, the school's principal at the time, would later recall that Dickinson was "very bright" and "an excellent scholar, of exemplary deportment, faithful in all school duties". Although she had a few terms off due to illness--the longest of which was in 1845-1846, when she was enrolled for only eleven weeks--she enjoyed her strenuous studies, writing to a friend that the Academy was "a very fine school".  Dickinson was troubled from a young age by the "deepening menace" of death, especially the deaths of those who were close to her. When Sophia Holland, her second cousin and a close friend, grew ill from typhus and died in April 1844, Emily was traumatized. Recalling the incident two years later, Emily wrote that "it seemed to me I should die too if I could not be permitted to watch over her or even look at her face." She became so melancholic that her parents sent her to stay with family in Boston to recover. With her health and spirits restored, she soon returned to Amherst Academy to continue her studies. During this period, she first met people who were to become lifelong friends and correspondents, such as Abiah Root, Abby Wood, Jane Humphrey, and Susan Huntington Gilbert (who later married Emily's brother Austin).  In 1845, a religious revival took place in Amherst, resulting in 46 confessions of faith among Dickinson's peers. Dickinson wrote to a friend the following year: "I never enjoyed such perfect peace and happiness as the short time in which I felt I had found my savior." She went on to say that it was her "greatest pleasure to commune alone with the great God & to feel that he would listen to my prayers." The experience did not last: Dickinson never made a formal declaration of faith and attended services regularly for only a few years. After her church-going ended, about 1852, she wrote a poem opening: "Some keep the Sabbath going to Church - / I keep it, staying at Home".  During the last year of her stay at the Academy, Emily became friendly with Leonard Humphrey, its popular new young principal. After finishing her final term at the Academy on August 10, 1847, Dickinson began attending Mary Lyon's Mount Holyoke Female Seminary (which later became Mount Holyoke College) in South Hadley, about ten miles (16 km) from Amherst. She was at the seminary for only ten months. Although she liked the girls at Holyoke, Dickinson made no lasting friendships there. The explanations for her brief stay at Holyoke differ considerably: either she was in poor health, her father wanted to have her at home, she rebelled against the evangelical fervor present at the school, she disliked the discipline-minded teachers, or she was simply homesick. Whatever the specific reason for leaving Holyoke, her brother Austin appeared on March 25, 1848, to "bring [her] home at all events". Back in Amherst, Dickinson occupied her time with household activities. She took up baking for the family and enjoyed attending local events and activities in the budding college town.

What are some significant things that happened in her teenage years?
When Sophia Holland, her second cousin and a close friend, grew ill from typhus and died in April 1844, Emily was traumatized.