Invitation to the guild not delivered

[Andy]

Thanks for the answer. When I invite her the name goes off the nearby list but she does not get the little envelope even if she refreshes. All of the apply buttons in her guild list are dark. It has been over 12 hours since we noticed that she was no longer in the Guild so the cooldown should have expired. What do we need to do to get her back into the Guild?

After about 20 minutes or so I tried nearby again and she was on the list again. Invited her again and still nothing. This is getting very frustrating.