Almost 25 years ago, Sandi Timmins started volunteering at the House of Ruth Maryland, answering desperate calls on the group’s 24/7 hotline from victims of domestic violence. But soon, a chance hallway encounter with the group’s executive director, who shared her struggles with the group’s growth, would shift her role. As it turned out, Timmins’ day job was as a business consultant specializing in helping growing organizations build their infrastructure. Timmins put her corporate background — s