Halley Vincent, the youngest indie bookstore owner in America at just 15 years old, is searching for a new location for her store, Seven Stories Bookstore, in Shawnee after her current building was sold.”We had a lot of people who were super excited to check out the store,” said Vincent.She started the business three years ago as a nonprofit to benefit local animal shelters.”We give away books. We try to get people reading,” she said.The bookstore occupies a 400-square-foot space.News of the building’s sale first broke in August, and now Vincent has hired a real estate agent to find a new location in Shawnee.”I can’t quite look for a space if I’m in school,” she said.Vincent is a sophomore at Olathe North High School.”I ride the bus home from school and then come in to run my business,” she said.Vincent acknowledges the challenges she faces.”I think the main burden I’ve …