Snowdog- nobody is denying that this student is in a sub-optimal situation. But the problem appears to be that the documentation did not say “This student has an anxiety disorder and cannot attend college without accomodations including living in a single room”.
Documentation which leaves it up to the disabilities office to parse isn’t going to get the job done. Especially if there are a shortage of singles on campus, and especially since the D is a transfer student who likely didn’t get her housing deposit in when the returning students did- based on the nature of transfer admissions.
I have no resentment. But the OP did not understand that the documentation could not leave it to the imagination as to the type of housing her D required. It must state explicitly what she needs.