Most PMs are driven by results, and that is probably a good thing, most of the time. However, I have a colleague who has become utterly focused on delivery, and won't accept any answer that she doesn't want to hear. This results in her challenging everything that she is told, upsetting junior members of the team, alienating suppliers, and getting personally involved in even trivial decisions. Members of the team have asked for my advice on how to approach her.
What advice would you provide to the team, and is there a way that I could help to resolve the situation without damaging a long-standing working relationship with the other PM, that has been positive until now?