Hi Meso,
I am so sorry your daughter had to endure all that, it sounds awful. But there are many others on this website that have endured something very similar. BPD and NPD have many similarities, both will deny wrong doing, as you point out, both create trauma in similar ways. My brother is NPD, but thankfully never married. Your daughter may be interested in the following board, it’s about coping with the breakup. Scars are left and even years after breakup and may still need addressing:
https://bpdfamily.com/message_board/index.php?board=8.0Feel free to post any concerns or questions. And please do let your daughter know there is a community of people who’ve been through similar trauma, here to help if she so wishes. Welcome.