Frazzled kids started school in doubles, but lived in singles after freshman year in a variety of living situations.
Our kids were far from their support systems, however, and could not come home for a week-end or otherwise to regroup.I do not think it was unreasonable, since they did not like being “sexiled” by room mates, and themselvess had EC schedules that kept them busy early in the mornings/and or late at night and had them coming and going or catching up on sleep at odd hours.
The arrangement I did not like so much was the single person in an apartment. Too lonely.
For a picture of a dorm situation gone terribly wrong, I would take a look at “The Price of the Party.”
OP - Any chance that your D might be interested in a summer program for high school students, held on a college campus next summer? It might give her a better feel for what it is like to live away from home, or share a room.