I got a used Iphone 4S from my daughter after she purchased a new Iphone 5S?

She has copied all her contacts from her old phone. When I have added my contacts, I have deleted her contacts in her old phone. But all her contacts in her new phone got deleted. I tried backup recovery after a couple of days but no success. Can any body suggest way out?

Do you have sprint, tmobile, verizon, etc? Verizon has back up assistant. Other than that there's not much you can do. I'm sorry.

You are probably connected to her iCloud account, go under settings> iCloud then sign out. ICloud transfers anything under the same account to each others phones