@Alphonce Once you have sent her an invite via the Shared User process in the Ring App, she’ll just need to accept the invite in her email inbox. She’ll then have a new location in her Ring App with (Shared) in the name. You can toggle between locations by tapping the location name in the top center of the Ring App.
If it’s still not working properly, you may want to reach out to our support team directly so they can take a closer look at this for you. You can give our support team a call at one of the numbers available here. We’re taking additional steps to protect our team and help reduce the spread of COVID-19, so this has resulted in longer than normal wait times. If you are outside of the US, please read our response to COVID-19 here to see how to contact support. 