What early tensions are revealed about Esther through the contrast between Betty and Doreen?

The narrator of the novel, Esther Greenwood is a scholarship student at a prestigious women's college entering her senior year as the novel begins, and working at an internship for Ladies Day magazine in New York City. However, she faces an increasing sense of anxiety concerning her future during this time, not sure what career path she will take or whether she will take one at all and instead get married. This anxiety leads to a severe depression and a suicide attempt from which Esther slowly recovers through asserting her independence.