"I haven't seen you this happy before," Benjamin said. Not that he knew her that long, but still. It was nice to see someone was able to be happy in this awful place. 
He didn't think he would need a guard - no-one had tried to kill him during the night so far - but it was nice to know she cared enough to suggest it.

He looked up when the door opened and a nurse brought in his night-time medication.
"Thanks, I already had my portion today," Benjamin said. 
"You need this four times a day," she reminded him.
He reluctantly took the cup and watched her.
"Since you are labelled as a refuser I have to see you take them."
"Then we can stand here all night," Benjamin replied as he put the cup on his nightstand. "Good night, I'm going to sleep now. And if you wish to stand in the doorway all night: be my guest." He turned around, grabbed his pyjamas and went to the small bathroom to change.

The nurse left, she knew she couldn't force him to take them, but she would report it.