Another angle you can take is to appreciate who she was before, and be happy that you got to spend the time with someone like that. It was obviously great for you, so be happy that you were able to find that. But at the same time look at her as something different now, that you don't want to be with. You may really have to find a way to think of her as someone completely different, a whole other creature. If you have to be in social situations with her, call her by a nickname and preserve the memory of her old name. Just do whatever you can to move on. She's made a mistake, she will have to live with her choices. It sucks. One thing you can do to avoid social situations with her, is if you initiate the plans. That you control whoever gets invited out for an evening or to the movies, or whatever you want to do. Just invite all the people you want to see, but don't invite her.
I would personally use this as an opportunity to gain a better spiritual understanding about life, people, and that all that matters is serving and not having hidden motives. You give yourself credit for making her out to be a much improved person. Perhaps what you did was shine a light in her. Know that what you did had an effect on her so significantly that she decided to change her course of direction. There are a lot of "I's" and "Me's" in what you say and 1 "We" Whatever you do, leave her alone and focus on yourself. You are in pain only because you allow yourself to be in pain. Life is about developing character. Learn from this and move on. You will be a better person. Feel free to email me through the board and I'll explain in more detail how I came to grips with it.
Damn...That sux...Just remember not all women are like that and for some reason, some of us like "fixing" things...Whether that be a car, a house or a person...Not saying you did that, I"m just saying... Don't go on an alcohol binge...That is the easiest thing to do and it'll help your back as you'll feel no pain, but you'll probably bang an ugly chick... It'll take time to feel better and not feel used, but you'll find out that this was the best thing to happen as sometimes true love is found where you least expect it...
To the one true God above: here is my prayer - not the first you've heard, but the first I wrote. (not the first, but the others were a long time ago). There are two people here, and I want you to kill them. Her - she can go quietly, by disease or a blow to the base of her neck, where her necklaces close, where her garments come together, where I used to lay my face... That's where you oughta kill her, in that particular place. Him - just ****ing kill him, I don't care if it hurts. Yes I do, I want it to, ****ing kill him but first make him cry like a woman, (no particular woman), let him hold out, hold back (someone or other might come and ****ing kill him). ****ing kill him. Kill him already, kill him. ****ing kill him, ****ing kill him, Kill him already, kill him, Just ****ing kill him! {repeats "death mantra"}