Seriously, though,
does anyone have any idea about how i should word my reply?

I'm stuck.. Do I just say "Yes" and be done.

Does this look rude/upset.

Or go for something like:
"I'm happy to continue the mediation."

Does this make me look like a doormat?

We'll be sitting together in a mediator's room talking about money while our bloody DIVORCE is processed in a court on the other side of town.

When we walk in to the mediation session we'll be married; when we walk out, we won't be.

And we will have taken no part in the process, or spoken of it to each other (at the time).

Am I too sensitive or is this bordering on mental cruelty?