KATHERINE HOURELD THE young mother was trying to get home with food for her two children when she says soldiers pulled her off a minibus in Ethiopia's Tigray region, claiming it was overloaded. It was the beginning of an 11-day ordeal in February, during which she says she was repeatedly raped by 23 soldiers who forced nails, a rock and other items into her vagina, and threatened her with a knife. Doctors showed Reuters the bloodstained stone and two 3-inch nails they said they had removed from her body. The woman, 27, is among hundreds who have reported that they…