A mom of two studying to be a nurse, a graduate student learning to care for cancer survivors — and the shooter’s own sister — were among the victims of the Dayton, Ohio, massacre. Connor Betts, 24, killed nine people when he opened fire on a packed street lined with bars and restaurants around 1 a.m., including his little sister, 22-year-old Megan Betts, his youngest victim, authorities said. It is unclear whether Megan was an intended target, they said. Megan Betts was an environmental-science student at Wright State University and set to graduate next year, according to her Facebook page. Logan Turner, who previously attended the college, also was killed, authorities said. “Sweet and smart” Turner had just celebrated his 30th birthday Tuesday and was out with friends at the time of the shooting, his mother, Danita Turner, told WHIO-TV. “He was very generous and loving and the world’s best son,” she said. Another victim was nursing student Lois Oglesby, 27, who left behind a n...