Shawna Hennessey has been an Italian instructor at Fenwick High School for 19 years. Affectionately referred to as “Prof” by her students, she teaches with genuine enthusiasm and commitment. But if you had asked her two decades ago where she’d be today, she never would have imagined the role she’s come to love so deeply. Hennessey was born in Minneapolis but grew up in Western Springs, a southwest suburb of Chicago. Though her father is mostly of Irish descent, her mother traces her roots to Amaseno, a small town in the Lazio region of Italy. Hennessey’s maternal grandparents immigrated …