Marital-related events rank right up there with serious health-related issues on the threats-to-my-personal-survival scale. Being a chronologically-challenged guy, I've had time to experience them all in my younger days, and in my experience, things get a little easier with each passing day. And one day, you find yourself flourishing.
... forcing myself to buckle down and just LIVE day by day until I stabilize.
I sense you've got the determination to weather this, and I'm confident you will! I'm reminded of the lessons in an excellent book,
Deep Survival, Doug reviewed
here, where he says, "...it is about your number one survival tool, more important than any other, your mind."
All the best to you ... someday your daughter is going to be very proud of — and grateful for — her mother's determination.
Dan