Oh hell, IGNORE the lawyer. Can you not see, you are being sucked into her drama? This is exactly what she wants. It seems a bit dramatic to me for the lawyer to suggest talking through her in case you get nasty, when it was her that is the WAW, right?
You can respond briefly and to the point if necessary, but do not get intimidated by the lawyer. Short and sweet factual answers is what you need to give, showing NO emotion.
She'll soon pack in it when she realises she can't get a rise out of you, and it will make any settlements go smoother.
The trouble is, you aren't detaching properly as you are still thinking about her and her drama and what she says and does all the time. Cut off for your own sanity. You're not giving her the chance to miss you, like this.
Build a thick skin, Tag, and IGNORE her as much as you can. That was the only way my court stuff stopped and he showed any interest, because I STOPPED responding.