Daniel Mathis and his sister, Mersadies Shelton, have been charged with grand larceny in the theft of Quick's 1999 Toyota 4Runner. A second sister, Shantai Shelton -- who has not yet been charged directly in Quick's case -- was picked up on an outstanding warrant from Louisa County, east of Charlottesville, where Sunday night's armed robbery took place, Geller said earlier this week