In this 9-week study, participants will be randomly assigned to receive ERT, a sleeping pill, or placebo. Study visits will occur at baseline and Weeks 2, 4, 6, and 9; at each study visit, blood pressure will be monitored, and standardized psychological tests and questionnaires will be used to assess the participant's level of depression and reported quality of life outcomes. Blood will be drawn at baseline and Week 9 to measure estrogen and follicle stimulating hormone levels.