Hall of Infinite Doors

You step over him and pick her up from the car. She is out cold. The lights are coming on, and the rain intensifies slightly. There is no way you want to stick around for the cops.

You bring her back to the entrance of the tunnel and proceed to the room. She is a lot lighter than Lydia. You struggle with the lock, but finally bring her inside and set her on the table. Whatever he gave her, it put her out cold.

The problem is that you forgot your mask back at the dorm. You could depart for half an hour to go get it, or you could bring her with you and place her in bed as you did the other.