I think he would have gone along with Anntreen and Jeaal, pretending to be their "Child" and not saying much; but I don't want to be with them if that would make things too easy. Another possibility is that he could have sat down by the tree where the party was when they first encountered the two ragged men and gotten lost in studying the note from the cabin and suddenly looks up to notice that everyone else has left.
Up to you, really. Both solutions make sense so choose the one you prefer. Is not a problem if you come out to help the elves because is not so strange that Ferrin may have followed them. Using your character, for me, it means that I keep it in the game but I don't take any decision for him unless unavoidable (combat or other situations). I will not use items or cast spells if I can avoid it and I will not choose a path rather than the other. My idea is that you should be able to find it in the same conditions in which you left it. Nobody asked about him so, for me, he can be anywhere.
So now what... My post doesn't count and I have to start over? This isn't going to he fun. I didn't mean to mess up.
Carmana: We can solve it in this way. You went around looking for your lost pendant and you found it (Add it to your inventory with a short description. Example: chained golden pendant). Then you joined the party again.
My apologies to everybody for being late with the game update. I have been terrible busy with my business lately (Yes!) and I'm now enjoying a two days vacation on the seaside (Yes! Yes! Yes!). But I'm alive and I will now dedicate an hour to move things forward for everybody (actually Carmana is still missing but I can't penalize further the active players). Ok, let's get to the task. Sorry again.