how should I react if she says/asks something along the lines of: "There, that's enough closure for you [for me], right? Are you ready to sign the divorce papers?" ...I have no idea how to respond in a way that won't futher aggrivate her, other than just saying "No, i'm not ready to divorce."
Two things: first, if you're not ready to sign, you're not ready. You could say (calmly, of course), "This is really tough, and I'm just not there right now."
Second, it's hard not to think about how the WAS might respond, but that's not your problem. You tell her the truth, kindly and calmly, and she'll react the way she will.
Get yourself together before the talk: meditate or whatever if you do that kind of thing, remind yourself that this is probably one talk among many to come, visualize yourself talking to her calmly and unemotionally. You can do this.
