I agree; she was running to the cave when she saw the figure so it could just be her imagination.
There was something else I missed, that Aurora showed Laura her arm which was all manky and said they were both close to death, did we find out what was wrong with Laura? There was a fight at the front of the cinema at the beginning and we missed 5 minutes.
But I do think if he'd been missing for 6 months, the police would have definitely found the cellar. Did they check Madeline wasn't down there as well?
But she pulled up Laura's sleeve as well and didn't she have some marks on her arm? She was talking medicine all along wasn't she? And the Orphanage was for special kids wasn't it? And she went there when she was a kid and was taking medication (or were those sleeping pills?)
Yes, she was taking pills but I think they were tranqulizers. Maybe. But you're right, most of the kids in the orphanage had a disability of some form - I don't think we ever found out whether Laura did or not, and what it was if she did, though.
The original orphanage when Laura was there wasn't for ill or dying children, it was just an orphanage, for all. At the very beginning it shows Laura playing the 1,2, 3 knock on the door game with the other children, and you can tell they all really look up to her, and see her as their big sister/mother. Then it cuts to one of the carers at the Orphanage saying "oh Laura, they're going to miss you" and then Laura is adopted in the next few days. Chronologically, I think after she leaves, the incident with Tomas and the other children happens. I think Laura would have remembered living with a disfigured child but she never alludes to it (except when she watches the old film reels- is it explained where she gets them from?).
After Laura tells her husband she wants to be alone for two days there is a point before she first sees the ghosts where she takes a handfull of pills. I think it might be when she is sat around the table waiting for the children to come and eat the fruit she has gathered? So they may have made her quite ill and sluggish already by the time she sees them in the 1, 2, 3 game. But there is also the angle about believing they are real which I mentioned before, so perhaps she needed to play that game to draw them out.
I don't think Laura had a long term illness, though.
Laura said she never remembered Tomas or his mother and the poilce lady said Tomas was always hidden away and that's why she didn't know him, and that his mother was only there very briefly (although she was apparently there when Laura was). The incident happened a little while after Laura left the orphanage.
This is going to be one of those films where you want to go back and rewatch it to fill in all the pieces to help you understand it more, isn't it?