Clash of clans village transfer problems?

Ok, I'm having a bit of trouble with game center atm! About I year ago I got an iPod and started playing clash of clans and got pretty far into the game, a while later my sister started playing the game too, she signed into the same gamecenter account! This started to made it so the game would ask me to load her village on my iPod whenever I loaded the game up! So I signed out of gamecenter and played the game as normal! When I got my iphone just last Christmas I was automatically signed into the gamecenter account when I set it up on the computer and sure enough there was my sisters village! I've tried making a new gamecenter on my iPod and signing into it in my iphone but my sisters village is still there! Tried linking devices, no luck! Tried using Facebook which is hooked to my base no luck!

Get someone who knows this game and he will answer the question