you can view her calls online if you have access to her phone for just a quick minute. You may go to almost any cell provider and sign up online to view all of your account info. You must however know some personal account info and have the cell phone on hand as most cell companies will send a tempoary password to the cell phone that you are registering for online account management. Once the text is sent sign in and reset it and erase the text from her phone. This will work if she hasn't already sent up an account herself if you have a family plan you can use that cell number as the family plans are billed together, but they each have their own log-in info, you can also view with paper billing even prpaid has the option to sign up online.  Good Luck any questions