Hello Vatican and welcome!
I understand what you mean about feeling anxious. When I first got here, reading what other people were going through made me nervous and even sometimes rather despondent about the future. Actually, that can still happen. But, overall, it was such a relief to be surrounded (virtually, of course) by people who "get it."
My H, too, was triggered by a series of stressful events in his life. Sounds like that's a fairly common theme around here.
There are things you can do to help you navigate these rough waters -- and help your daughter too.
How old is your daughter? If you had to point to one area or behavior that's causing the most trouble with your H, what would it be?