My colleagues who have answered this question, and your own attorney, are all correct. I mediate almost every day, and most of my mediations begin with one, or both, parties saying, "This is hopeless" or "This will be a waste of time." Almost 9 out of 10 of those cases are resolved through mediation. Given the multiple issues and complexity of divorce cases, even if you do not resolve every issue at mediation, it is almost certain you will resolve some issues.
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I would echo the common theme from my colleagues above -- do what you attorney advises. That said, as a mediator who handles about 250 mediations a year, I find the role of attorney at a mediation is critical for most cases. If your mediation can be reset for a time when your attorney can attend, that is probably the way to go.
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