IHF,
Your wife works in the corporate business world. She is no fool. If she is desperate to avoid lawyers being involved there is a reason. Well, there may be many. However, I think everyone knows that a divorce that is drafted on the back of a diner menu and sealed with a pinky swear really is worth nothing at all, in any way, shape or form.
Whatever agreement you reach absolutely must be put into black and white by a lawyer or attorney. If you agree some informal thing between you, what's to stop her from slowly whittling the payments down to nothing over a three-year period? Without a binding legal agreement, there is nothing to stop her doing that!
Which raises another point; her offer, while generous on the face of it, may be an attempt to buy her way out of a binding legal agreement, by flashing a few extra dollars at you and hoping you'll go with the pinky swear suggestion.
It also means that she gets to dictate the terms, unchallenged, with absolutely no legal obligation on her to live up to them one second longer than she chooses to. None whatsoever. And she retains total control of the process, with no pesky lawyers to rein in her power.
Given what you know of her recent behaviour:
1) Do you trust every word that she says?
2) Do you believe she has nothing but your best interests at heart?
3) How long do you think she will honor an agreement that has no legal standing?
Further, if you are tempted by the pinky swear diner menu offer, have you balanced what you might gain against what you might lose? By that, I mean that a non-legally binding arrangement that appears to be a bit more money than you might get in a court battle may appear at first to be more tempting than a binding legal agreement that brings you less, but a legally binding agreement is guaranteed.
Think about it, IHF: the legal agreement might be less, but it is GUARANTEED. It takes control out of her hands, it is a binding commitment, and it protects your best interests legally. If I was her, I would push for the pinky swear arrangement, and then, over the next three years, I would slowly whittle the payments down and down and down, because, hey, you're working now, and you have some money, and, you know, we've both got to move on, we can't keep living in the past, and I have bills to pay too, you know...
Seriously, IHF, even if your WW is trying to be generous, or trying to salve her conscience by throwing money at you, you are both adults, and the process has got to be made legally sound and secure. That does not mean it has to be acrimonious, but your wife does not have a good track record when it comes to doing the right thing by you, and you need to keep that in mind.
This is not about punishing her, or sending a message, it is about you and your financial security, as well as ensuring that you do not get bilked out of anything that is due to you.
Edited to add: I was typing my reply as you were typing the post above, so some of what I said here is superceded by you already choosing the lawyer route (which I think is in your best interest).
[This message edited by M1965 at 4:44 PM, November 16th (Thursday)]