Please help! Some issues with syncing!

Hello, dear apple users!

Yesterday i made sync for my wifes iphone 4 via icloud. Today my wife bought iphone 5 and doesn't restored data -waited for me. ;) My wife gave her old iphone 4 to her mom, without login out icloud. Mom started to delete and rename contacts one by one! When i returned home and made restore to iphone 5 via icloud, all she had in contacts was few numbers which my wifes mom lefted in iphone 4. So my question is does icloud change contact and other data? Even backups??? Can i get those numbers somehow?

Thank you! :)