I don't think any of us know the complete details.
Anyone can call a physician and talk to them about a patient. The physician can receive information and concerns from others but isn't permitted to discuss the patient's treatment.

I wonder who the people are who called. Are they legal caregivers and/or medical personnel? That might make a difference.

My grandmother was very combative and had psychosis of some kind. She was never diagnosed because it was always called something else in the family and mental health treatment would never have been persued, unfortunately. When she was in her mid 90's she moved into assisted living. She had no physical medical conditions, she was just elderly and needed daily living help. While she was there her doctor did diagnose her with something (no one ever finds out anything in this family! so I don't know all the details. sigh.) and a medication was given to her by the staff in her coffee each morning. She would have fought taking it otherwise as she was on no medications and she was paranoid. So she received medication that way, it made her feel so much better and calmer and peaceful. Daily living was no longer a frightening torment. She was able to interact with others then, something she really valued and enjoyed. She was finally able to be taken care of and able to receive the loving care offered.

So, I give you that example as one scenario where administering medication in an unconventional way was beneficial. I know it is not the same scenario as your friend has, but maybe there are some similarities.