I know you’re not asking for advice and I know I don’t know the situation, but it looks like, “she’s made a decision,” is the crucial part of it. When someone has made a decision, sometimes there’s pretty much nothing you can do about it. She obviously has her reasons and I’d wager there’s more to it than you know. If she chooses to ignore signs, as she says, I mean signs she believes in but chooses to ignore, that means even if she accepts something as real, but it interferes with her decision, she will cut out that part of reality. So this means she’s pretty much determined. For what reason we don’t know. You may need to let go, however.
This is from someone who understands you. The last relationship I believed started in connection with my prayers (the girl who turned me down came to me on her own when I decided to let go and start looking around, committing it all to God’s care), but things still ended anyway. I’m not exactly sure to what extent God plans things in our lives, but we do have free will anyway and perhaps she’s not right for you.
Prayers of course.