Your BS sounds a lot like how I think regarding sex and intimacy.
porn made me feel like I would just be a "real" place to put it.That is exactly how I felt with my partner who was into porn. Looking back, I feel used and disgusted. He wasn't into sex with me, he didn't even look at me. He got his images in his head and came to me to masturbate himself.
You need to work on the intimacy and the closeness and the trust/safe feelings before she is going to be ready to open up and be vulnerable.
I don't know how much self-work you have done, or how the communication is for you two, but have you talked to her in depth about how you understand how she feels? Have you been able to mirror back that you truly understand how betrayed and how "used" she felt? Do you truly feel that? Because if you don't, they will be empty words until you do truly get it. Have you minimized the fact that it was "just porn"? Have you told her things like "at least it wasn't physical!" Because if you are telling her those things, you aren't getting how she feels and that is extremely important.
Have you been sharing the self work you are doing with your BS? Have you told her your revelations, your "aha" moments, the reasons you escape to porn instead of the real intimacy with her?
Does she know for a fact that you are not doing porn anymore? Does she know that you are willing to wait for her and that you are working on rewiring your brain to desire real women instead of the airbrushed fantasy that can't say no?
Does she have all your passwords? Do you stay away from things that will trigger her, such as the internet?
She is most probably feeling used, disgusted, humiliated (for thinking you were actually attracted to her--even if you are, she isn't going to believe you), distrustful, traumatized etc....
You do need to have a heart to heart with her and ask her if she wants to work on the relationship with you. At 8 months, she has had enough time to start to decide which way she wants to go, even if she doesn't stick with it. You need to reassure her that even if she doesn't stick with you, you are going to continue your self-work but you are willing to do whatever she needs to feel safe.
Lastly (I know this is long!) I recommend the book "Not Just Friends" by Shirley Glass. My WS and I read a little bit from it most days and we have had so many "aha" moments and we both understand much better how the other person is thinking and feeling because of the open discussions the book helps us with.
Plus, would she get on SI to help her with her feelings of betrayal? She would be in good company!