In this project simulation, Patty wasn’t the project manager but she was a significant stakeholder and team member. The project manager’s job is to mediate between these two personalities. It is possible however to have a difficult project manager who may have a similar disposition to Patty. I have found that when you need to communicate a challenge that has a significant impact on the project it is best to make sure you have support from your management first. Make sure they are up to speed and agree with your recommendation before communicating to the rest of the team. In my case my manager would reach out to “Patty’s manager” to soften the blow. This can allow the team to have a discussion of the different solutions and risks to the project.