First off, so sorry to hear about your mum, that is a really tough one.
So H thinks wants to try again but has not put his money where his mouth is? And you pretty much feel done? Hmm, its ironic how timing changes where each of our head is at so much. I know you must have so many emotions swirling around right now with all that has been happening. I understand that you have finally got it together to move on with yoyr life and are doing great, and thats great.
I guess my main comment would be that this is one of those times your H has flung the window wide open for you to have the possibility of seeing what sort of place you could move forward to in the future. Those chances to explore such questions do not come along too often. If you were to look back on your life in 20 years time, to you think you would have prefered to taken one last look? You know he is going to be the shadow version right now, but it is worth exploring the option to see what might lie down that path? I understand you might not feel like looking at that right now, and I think its very important to be in the right place to look into it, or it is not worth while.
But I think the ball is well and truely in your court, and with so much happening to you right now, it's important to step way way back and weigh up one more time why you fought so hard to keep things together for so long. Its a real tough one.
I am not really into the Alt, but Grace O has my contact details if she would not mind passing them on.