It's horrible when someone that you love(d) and thought loved you turns on you like that. I'm going through similar at the moment. When we split we tried to keep things amicable, but then she completely stabbed me in the back and left me no choice but to go the legal route. And ever since that, when I finally stood up to her, she's just become this angry, bitter, hurtful person towards me.
If she is being so awful, perhaps it's best if like you say, your lawyer deals with her so you don't have to! By this point I wish I was able to do that, but as we share custody of our child, unfortunately I still have to deal with her fairly regularly. Good advice about the gloves coming off - if she's like my ex, if you give an inch she'll take a yard. It's so hard, but like GingerVicki said: "love does not apply in a divorce".
Hoping that somehow tomorrow seems a little brighter for you.
Hugs,
Maria