Two different iPhones ring when one is called
I have two iPhones, one for me and one for my wife. When I set up her phone I used my Apple ID and iCloud account. Now when someone calls her or me, both phones ring, and we both get each other's texts. How can I completely delete my iCloud account and info from her phone so this doesn't happen?
Hers is a 5c and mine is a 5s.
Thanks.
iPhone 5s, iOS 9.2.1