What I heard what her wife told you was, "Me, me, me, me, give me money, me, me, me, victim, poor me, me, me, ME, stay friends with me, pay for my phone, me, me, me, I deserve for you to pay me, me, me, if I'm not getting you to pay then f you, me, me, me."
I think the whole meeting was for her to make sure you "stayed friends" so to manipulate you into paying for her stuff while she still cheated on you.
When she told you "I was on the fence, thinking of R until you blocked off OMs number, turned off my phone, closed our bank account, changed the locks" what she was hoping was that you would say "oh I'm so sorry I will do everything back to the way it was please give me another chance."
Sadly, I think the large majority of cheating wives don't think their husbands like "he's got to stay with me, no other woman would ever want that poor sad sack." That's how much most of them devalue their husbands and how valued they feel about themselves, like the world is their oyster.
How I see about your particular situation is that you are in a pain of world for a very short time, and very soon you will be better. It is much, much, much, much better that you've gone through this extreme but short-term pain NOW because if not, if you had stayed with her and gotten kids and more entangled lives, you would wind up with a pain that will last the rest of your lives. In other words, I think you are lucky that you found out about her now, rather than later.