I was trying to add my friend who is offline she works during the day and I work during the night. The problem is I cant add her because I tried doing a search but it says the character with that name doesn't exist. I'm sure the problem is because she is not online at the moment. I just think it should be possible to add friends who are offline too, now I can't add her.

If you can add offline friends can someone please tell me how. thanks.