The Virginia teacher who was shot by her 6-year-old student texted a loved one before she was wounded that the boy was armed and that school officials were failing to act, according to a source close to the situation. The source on Tuesday said Abigail Zwerner sent the text about an hour before she was shot on Jan. 6, saying that the student said he had a gun in his backpack and administrators at Richneck Elementary School in Newport News weren’t helping. The text “showed her frustration,” said the source, who only disclosed details of the single text message to...