Hello Going Gray: I see this is your first post here on PC. Welcome to Psych Central.
The Relationships & Communication forum, here on PC, may also be of interest to you. Here's a link:
https://psychcentralforums.com/relat...communication/
I'm sorry I don't think I can probably be of help with regard to your concern. Although I've never been diagnosed as having cPTSD, I suspect I probably could be. So, in my marriage, my wife would be the "designated caregiver", so to speak. Perhaps there will be other PC members who will have some suggestions they can share.
Here are links to 2 articles, from Psych Central's archives, on the subject of cPTSD:
The Unique Features of Complex PTSD
C-PTSD and Interpersonal Relationships
I hope you find PC to be of benefit.