Take a pill now to visit the Hidden World (you can keep taking pills to switch between the normal world and the Hidden World from now on).
Next examine your locked white box and notice the word HIDE written on it this corresponds with the numbers 8945, so enter this and you will find your pills. Use this to unlock the white drawer and you will take a photo and hair clip from inside. Go back to the right and open the box in your inventory to find a key. Read the notes and the book, then take the band-aids. Take the locked white box from inside her drawer and open the blue blanket to see a gun. Go left and talk to the nurse about the broken curtain, then go right and talk to her again so that she leaves. Try to open the white drawer, but it is locked.
Return left and pull on the curtain to break it, then pick up the hook from the ground. Pick up the small box at the foot of Phil's bed. Talk to the nurse on the left, then to the boy on the right - he says you need to find a secret code. When instructed, pick up the purse from the table, then look inside it and examine the note.