A gravely wounded 12-year-old student at Tumbler Ridge Secondary School in British Columbia is hanging on for dear life after being shot by a “gunperson” in a “dress” — in Canada’s deadliest school shooting in decades. Maya Edmonds was one of at least 25 people injured in the carnage when a shooter opened fire at the school in the tight-knit community of Tumbler Ridge on Tuesday, striking her in the head and neck, her mom said. “Today started as any other. Now, however, my 12-year-old daughter