Firstly, if you can help please could you explain very simply as my brain doesn’t work that well atm? thank you.
I use the Kindle app on my iPad and DD has just been given a Kindle for her birthday. When I googled previously it said books could be shared under family sharing, like Prime video etc. Brilliant. I have a lot of books she’d like to share which is why we bought her the kindle.
However, how in the name of God do you actually DO this? I’ve gone to family sharing etc, she already has a profile there but obviously her new kindle has a brand new kindle email address and we cannot work out how to add that. she’s also set as a child with a cute profile pic (she’s 25 
) but it didn’t ask her for kindle email. So that’s not helped!
We are both at a loss. Please can anyone help? We would be very grateful! Thank you in advance.