Jason, get some rest if you can. Give yourself time to take all this in. Try to talk to someone who will listen. Someone you can trust, someone who understands. Watch out with the guilt. I am sure you did the things you thought were right at the time with the information you had. You love this woman. You would have done anything to save and protect her. Don't take on guilt for things you are not responsible for. Again, I strongly suggest you talk to someone, face-to-face, a professional if you can afford it or have insurance; if not in a group setting. As soon as possible. You may need to take some time off from work, if you can afford to.
I speaking as a friend. If you are interested in talking, I would PM my cell. You could call anytime. Just let me know.
Thoughts and prayers going out to you.