I’ve set up Family Sharing and added my wife. She accepted and we are supposed to share only storage. However her iTunes account still only shows her on the free 5GB plan. Any one have recommendations on what to do?
She should have received a message and accepted. I think you’ve mentioned that she already did that.
Try unsharing the storage (stop sharing iCloud storage), and then sharing it again. Make sure she accepts the invitation she gets.
If that doesn’t work, restart both your devices. Sometimes that might do the trick.
Otherwise you might have to contact Apple Support.