Instinct or denial? If you're talking about praying for her, I don't think it's denial.
You were engaged, not married. There is still pain in losing her and what the two of you were planning together. But you do have the luxury of knowing that you are not deconstructing a marriage.
She was strongly attracted to you once. It could happen again.
You know how this works though. Trying to be attractive to win her back...nah. Being the REAL BF, the best one you can be...yeah.
Maybe she's got flaws. Then again, maybe she's as confused by this as you are and she just doesn't want to let you in right now.
Grieve the loss, continue praying for her well being, and continue on with the strong guy that you had become. Let life happen.
Bill
"Don't tell me the sky is the limit when there are footprints on the moon."