My wife and I use several features of iCloud, like calendars, reminders, and more. We are also using the new Family Sharing features of iOS 8, but this issue existed before then, and still happens today.
For some reason, if I want to connect anything between our accounts, I must use her @icloud.com account associated with her account, not her general gmail account. This gets to be annoying, because we never remember, and she doesn't use that @icloud.com account for anything.
She can sign into iCloud on her devices and the web with her gmail account.
If I share to her gmail account, it never gets to her. If I share to her @icloud.com account, she gets all invites, and actually gets the notifications in her Gmail.
How do I get this to work without the extra account?