ANSWER:
If you are disrespecting Allah, how do you blame people disrespecting you?
She has all the right to threaten you as it is prohibited for her to be married to a Kafir who doesn’t pray.
If you are not willing to submit your will to Allah and comply with His commands, it is best for you to set her free so that she can move on with her life and marry someone she can be with in paradise on the day of judgement.
Your arrogance is blocking your vision and you are following the footsteps of Satan who refused to prostrate to Adam peace be upon him because he thought he was better than him! This is exactly the same scenario happening with you.
Satan’s fate was hell for eternity. Let us hope your’s is different!