This is why you MUST get a life of your own. Take this time and really work on you and do some things you've been thinking about doing or stopped, or whatever. If you are interested in it, do it. I don't care if it's learning how to make ice sculptures, do it.
Here's some more advice and do with it what you want or will.... When she lashes out, You and I are done, so stop bothering me. You say I'm sorry you feel this way. But we do have to still work together for our kids and make sure they are provided for. They'll have more and better if we can work as a team. For now, take the focus off of "saving the marriage" and let her know your main concern now are the kids and making sure they are good.
The great things here is you want to make this work. So calm down, learn how to be the mature one here. I think you already are, but you can take it to the next level. Be a sexy strong confident man.