Help me (new graduate)

One of my patients today was unhappy with her doctor. Other people knew about this and were involved, such as the case manager and patient advocate. Anyways, I walked into her room and she hands me the phone. The girl on the line said that she was a receptionist for Dr. so and so (some doctor she called) and that the patient asked if she could switch to this doctor and that Dr. So and so said it was OK. I wrote down all of the information, such as the doctor's name and number and I told her I would tell my preceptor about it when she got off of break. When my preceptor got off of break I told her about the phone call and asked her what we are supposed to do. She said she didn't know. I had to leave soon afterwards for a class provided by the hospital for new graduates, so I don't know what happened. The nurse didn't appear to think it was something that she had to do anything about. So... what is the nurse's role in this situation? Calling her original doctor and firing him for the patient? is this typical for a receptionist to call the nurse like that? How do I even know this receptionist isn't her friend or something?