It's still unknown whether she is a good or a bad entity in the series. Ran is this generation's Prophet in Gabe and, therefore, she has the ability to see into the future. She goes every now and then into Lux to sell flowers, but recently she seems to just follow people around. She takes special interest in Ichise and helps him escape from the sewers when Isshii's men throw him down there. (Source: somehow-someday.com/texhnolze)