She's in a room that is definitely not any of the rooms in the Montfort Hospital! Though, if she had to compare it to her expected surroundings, the part it resembles most is that one low-acuity bay tucked around the very back of the ER, which she's pretty sure used to be someone's office before the ER ran out of space and it got converted into what everyone still calls the "in-and-out".
It's long and narrow, maybe twenty feet long by eight feet wide. The lighting comes from two elderly, slightly flickery incandescent bulbs on the ceiling; it's not nearly as bright as Marian would prefer. One of the narrow ends has a door. Arranged against one of the long wall, it has two narrow cots or gurneys, not currently made up with sheets, the mattresses cracked with age and the frames rusty. Beside them is a metal supply cabinet with drawers, also ancient and battered, and beside THAT is, inexplicably, an enormous hardwood desk that looks like some sort of Victorian antique. All of these are covered in a fine layer of dust, as though left untouched for months.
The other wall has a door, currently shut, and a wall of shelving, currently holding an extremely random assortment of objects. Most of them are vaguely in the category of medical supplies or at least 'supplies that you would find in an ER' - there's a bottle of something that might be iodine going by the colour, but with the label worn off, there's an age-yellowed box of Rolled Gauze Bandages, there are some boxes of needles and syringes and a pile of those crinkly silver thermoreflective blankets still in their plastic packaging. There are some folded sheets and blankets which do not look entirely clean. There is a truly enormous bottle of milk of magnesia. There's a copy of Gray's Anatomy that could easily date to before 1900. Someone, at some point, thoughtfully labeled some of the shelves, with masking tape and marker, but the labels are faded and most of the bits of tape are half peeled off or rolled up, and they don't seem to be still accurate.
...The opposite narrower wall....isn't. To all appearances, it looks out into inky utter darkness.