I have a situation where a person at my level in a separate part of the company is not delivering the necessary results and it is impacting the company in a negative way. This person's management is aware of the outages but not knowledgable enough in her work to understand that she is a primary cause of the outage.
I have given some instances of feedback to the individual (did not follow the peer feedback model) and it has not yielded change. I now need to approach her management to explain the problems and the proposed fixes. Any advice here? This needs to be done - I am looking for help on how to do it as professionally as possible.