Supus

With all the crazy things that are happening in the news and all the hatred in the world we often forget there are still science observation missions going on.  They were looking at a giant terrestrial planet that is 8 times the size of Earth orbiting the habitable zone of a red dwarf called K2-18. The planet is called K2-18, no doubt if they visited the planet they would give it a more meaningful name, I would call it Supus-Major because is like earth but a lot bigger and it has a major problem, it is tidally locked to its star. 

What if K2-18 B has a moon that is the same size as earth? Would that moon be tidally locked to the planet instead of the star; then it wouldn't have a over exposed side and under exposed one. Perhaps it would still be partially tidally locked to the star. Who knows.