I think they're maybe saving the secret of her disappearance for later, but yeah, maybe not at all either. Dr Tom seemed to be rather set to not reveal it.
Oh, and notice the car guy is back again? I called it as a recurring role, and he seemed to have even more time this time out. I'm guessing that we'll see even more of him as the season progresses and maybe he'll be a key part of season 4. But it does make you wonder who the guy is and why he's so important. I mean, Dr Tom and the other therapists seem to be like co-workers, but this guy seems to be a boss, or maybe he's just a friend. He does seem to get more important as time goes on.Oh, something tells me that they will deal with what happened in tonight's episode. I'm not sure they'll just leave it. Kai even hinted at some catastrophy. It came off like a tease that we'll learn more about later.
And yeah, Graham Green's character Dr. Arthur does seem like some sort of boss figure. I expected to see him at the end of this episode and I think he'll play a bigger part this season.
I think you're right. It seems far too big a tease. My guess is she won't get this all in one go, but rather it will be something she'll gradually learn throughout the season, and maybe even get her group to help. I love how many characters first seem very minor but end up being part of the bigger picture. It's great at character development 
