The Maoist uprising only occurred within the last 20 years, starting around 1996 and the monarchy was abolished in 2006. There were a lot of concessions made for this to happen and restrictions put on the most militant Maoists to re-integrate them into society and work with them through political processes instead of further violence. They've been ruled by a Democratic coalition government for a while that includes a few different communist groups. But they aren't a wholly socialist country and there's still elements of monarchism and things like that.