She has been a high school social studies teacher armed with an M.A.T. degree, the owner of Oz Children's Bookstore, a political activist, a tap dancer, an adjunct at the College of the Atlantic, national co-chair of "The Most Important 20 minutes a Day: Read to a Child" project, a research assistant at the Harvard Business School, and an Elvis impersonator. Sheila has always had big hair, especially on Mount Desert Island, Maine, where she's from.