Final answer:
When an adolescent patient with autism spectrum disorder repeats the phrase "You don't want to be here," it is indicative that the patient doesn't want to be there, expressing their feelings indirectly.
Step-by-step explanation:
If an ambulatory care nurse is interviewing an adolescent patient with autism spectrum disorder and the patient stares at the wall and repeatedly states, "You don't want to be here," this likely means that the patient doesn't want to be there. People with autism spectrum disorder might have difficulties in communication and could sometimes express their own feelings or desires indirectly through statements perceived to be directed at others. Therefore, when the patient repeats this phrase, it might be reflective of their own feelings rather than making a judgement on the nurse's feelings or intentions. It is important to remain sensitive and responsive to the indirect clues that individuals with autism may use to communicate their feelings.