I liked what you wrote in the card for H. It is all about him as a Dad. Glad to see that you didn't bring up the incident for it has no place in the card at all.
Yup, got the antsy pantsy feeling again. Slow down and cherish every moment with H. I want to caution you that H may not bring up about "coming" home and working on an in-house separation. I believe H's actions will show you where his thoughts are...pay attention to those actions.
He isn't going to proclaim from the rooftop that he's gonna go back home. Not happening. I've seen many WAH here just slowly slide back in home. The apology may or may not happen.
You've got to think about the big picture here. Getting your M back on track and reuniting the family unit. That is the big prize, MDU.
You're doing really good in DBing your butt off here!
As for the lawn mower, it wasn't too bad at all...was it?