You suffer from sleepwalking, it happens rarely when you're stressed.

In your sleepwalking you risk getting hurt, and that night you went to the roof and walked on the parapet, still sleeping.

Price went out to smoke, saw you, and approached cautiously so as not to frighten you, and when he noticed that you had your eyes closed, he took you by the waist and carried you down, without waking you.

"got you kid" he murmured softly, without waking you, while he took you back to your room.