Men and women do not share sleeping quarters in mental institutions and/or hospitals. The genders are segregated.
In some states, restrained patients do not remain in the same room with other patients, to protect the restrained from harm.
In some states, no patient can be committed to psychiatric care for more than 72 hours without a court hearing.
Person who reported a Good as they always segregated males and females in hospital/institution is incorrect I have seen it all the time in North America. Maybe that is the case in their little place they live but not in places I have been in dozens of times all across North America over the last thirty plus years.
There is another door slightly ajar when in the padded cell. This is almost certainly the door to the cell's toilet and washing facilities, which are required by law.
There are long strings hanging from lights in patient areas, which wouldn't be present in a real psychiatric facility.
There is a plastic (breakable) clock on the wall, within reach of the patients, that can easily be used as a weapon.
Sawyer calls her mother's hotel directly without looking up the number, even though she only has been told the name of the place.