I don't understand the NOT understanding about prayer

. She is asking for us to pray for their safety.
Couldn't it have been handled a bit different at the front end? Like when he was getting frustrated simply saying "why don't you bring her in and we will get the necessary paperwork while she is here." Seems like he would have gotten what was needed for his girlfriend and you would have protected her privacy. You wouldn't have to state that she is or isn't a patient.
When we deal with privacy laws, sometimes we just have to find a different way to say things. Some way to protect the student's privacy and not continue to agitate the person in front of us.
Do you all have "security" or "property police"? Our local mental health facility has property police, they can arrest or do anything that the city police can do. Same with our campus police. That would explain the policy of not calling the police.