Sorry to hear it! Could you let us know what sort of issue you're encountering? Could you show us a screenshot of what error you get when adding her (if any) or what she sees in her app once you've added her?
In the meantime, please update your app to the latest version and log out/login again on both your accounts and see if that helps. If not, please send us screenshots of your apps so we can take a look and figure out what may be causing this issue. Thanks! - CANDY HOUSE