my really short impossible girl theory

SO I watched Doctor who and loved it... but what made me quizzical is the trailer for "Dark Water" Is Clara a bad guy now? how can she exist if she couldn't exist? and my final question IF SHE'S A BAD GUY WHY DID SHE SAVE THE DOCTOR?!?! well here my thought on that

THIS IS CLARA

maybe Clara is a ganger like amy was, explaining the sudden change in sides and why she is now destroying the Doctor

but in all serious its is making my mind go all alkdjldlkwjojfer coz I can't figure it out, see when it was River, Amy and Rory and we were finding out about amy I knew straight away RIVER IS AMY'S DAUGHTER! WTF that is some complicated family!

anyway back to the point my theory is for the past ten adventures Clara has been a ganger or a clone and will either leave in two weeks or at christmas to go and settle down with Danny but I am really looking forward to seeing unit and Osgood I love her jumper seriously! it's so cool coz 18ft scarf's are cool!