You are absolutely forgiven, querent, as I am happy always to give advice. I am sorry that it took so long to give you an answer- things have been busy on Derse today. Here are my answer for you

First: It is possible to see people who *will* be in your session, even if they are not awake yet, as their bodies will be asleep  in their dream towers on Prospit or Derse. If your relative has seen you on Prospit, it is possible that you are there, but have not awakened on the moon yet. If this is the case, it means that you are destined to play sburb with this relative eventually, and the other people on the moon.

Second: It is possible that your relative is telling the truth- I can not tell you how trustworthy they may or may not be. All I can tell you is that you will know if you wake up on your moon.