Welcome James - It hurts so much, and to have a spouse that won't acknowledge what they did is much harder.
She is not sorry for what she did, she is sorry she got caught. She will blame her choices on you, and she will shift things around to make you feel like you are losing your mind. That is if you continue to engage her in her present state of mind.
Your other option is to read up on the 180, and implement it. Go to a lawyer, don't tell her, just go, find out what your rights are, and how it would play out if you ended up D'ing. Knowledge is power, and power is strength.
Focus on you, and make sure you are being kind to you. Make sure you are doing the basics, eating/sleeping/ keeping hydrated. If you aren't go to your Dr and get some help with medications. IT's OK to need something to get through this.
I read your other post, and if your wife is truly NPD, she may never accept what she has done as wrong or bad, and you need to start feeling out what that future will look like.
Keep reading, keep posting.
Lots of folks here have BTDT.