The mediator does not advocate for either party or provide legal advice.   Each party must be willing and able to speak up for themselves.  

While the process tends to be more informal than a legal negotiation, it is not therapy.  A skilled mediator will help the parties have a conversation with each other that they are not able to have themselves.  By helping both sides share information, frame issues, and develop options, the mediator can help the parties move through the negotiation and come to a joint decision.