The door would open, and the person or people walking in would have a limited field of vision once they entered.
The wall around the bathroom on the left side, closest to the entry point, would cause a part of the room further inside to not be visible.
Ash could easily move out of view the moment that she felt the need to do so.
All it would take would be for her to roll further onto the bed she was on and to make her way further behind the cover of the wall surrounding the bathroom on the side, where it would be around the corner for anyone entering.
They would have to walk further into the room and turn at that corner if she did that, which would end up buying her more time for herself.
Whatever harm could come to her would be delayed since she would not be in their line of sight.
If she continued to remain out of their line of sight, then she could make use of that time to reach for anything that could be used to defend herself.
