i transfer some CD to my PC and I heard to down load MP3 converter and had sucessfully sync to my iphone 4s. but then i want to sync all that song to my wife iphone4s and foundout that all my informations on my phones are in hers and hers no longer there?

i bought 2 i phones 4s. And download itunes and Mp3 converter for all my CDs to my pc and sync them to my iphone. and all work out great untill i sync those songs to my wife iphones and somehow all her informations are gone except my info are in her phone. i tried to used DR fone to retrived her contracts..etc but all i got was mine only? have any idea how to retrieve her info back? my wife is really mad. help please!