A young woman is suing Roblox, Discord and Uber after a repeat predator used the platforms to groom her when she was 15 — paying a driver to bring her from Indiana to his New Jersey home, where he kept her locked in a small, dank room and repeatedly raped her, according to the suit. The anonymous plaintiff, now 19, is accusing the video game platform Roblox and Discord, an online messaging platform, of ignoring warnings about her abductor’s history of illicit behavior and failing to effectively