I actually think it's pretty good, Amy -- you did just fine. And I also think that your wife's response is to be expected, and fair (although I know it probably hurts).
This thing, if it is to be, is going to have to TAKE TIME. She's not going to feel missing you this quickly, and I do believe that the stance that you laid out to her (and re-iterated upon this current sitch with your mom) is the best chance you have of saving the marriage, if it is to be saved.
I'd love to hear Pearl's perspective, but I thought the exchange was honest and healthy.