This article was originally posted on the Boston Globe | By Riley Overend Globe Correspondent,April 10, 2019, 9:18 p.m. Erin Cash is new to the Dual Valley Conference, but the Concord-Carlisle first-year coach still hears what people around the league are saying about her girls’ lacrosse team this year. Over the offseason, the Patriots lost longtime head coach Paul Morrison and graduated seven senior starters, including their leading goal scorer and distributor, Payton Vaughn , who now starts at Yale as a freshman. “People might look at Concord-Carlisle this year as a rebuilding program,” Cash said. “I’ve heard that a bunch. We had a conversation today — rebuilding what? There’s no such thing as rebuilding.” Cash, who played at Boston College, is an architect of sorts in the regional lacrosse community. At Brooks, she turned a sub-.500 squad into back-to-back-to-back ISL champions. When she moved to Thayer Academy, she added two more ISL titles with undefeated seasons in 2010 and 2012. After spending four years away from the high school scene to complete her Certificate of Graduate Studies and raise her four children, she’s now tasked with constructing another title contender around junior Fallon Vaughn , Payton’s younger sister, and…