What did she like on you when you guys first met? Is that possible that without words she can see that T again?
No pressure, no pressure and no pressure. If at any moment you feel it will be in that direction, go away, do something else, go somewhere and breath. The worse that can happen is to put pressure that everything needs to be resolved in a day or two. It will take time and patience. If there is pressure, she will run.
Don't try to hug and kiss her if the door is closed. I know you are very thirsty but hold your horses until you see that door open to you.
Be gentle but do not kiss her feet. Be patient but don't take crap. Be understanding but not an idiot. I hope you get what I mean. Be a man, but not a "macho".
And please, please, please, be very careful about your anger issues. She will push your bottoms, she will maybe say something that will hurt you, she will explore your life while away from her, she will reject you... be prepared for the worse and if it does not happen, then better.
Why is she mad? You won't be able to know until she tells you, not because you will be asking and discussing her issues, but because there will be a time when she will feel safe to say it to you.
She is still very confused, hurt (her reasons), something happen in her life and you don't know exactly what it is. So give her time and space until she will be ready to open up to you.
There is the other side that is "shame"... she may never say this to you, but maybe deep inside she feels the shame of leaving, needing your help all the time and now coming back with her tail between her legs.
Don't be the super guy with the answers for everything, the "I know I am right guy" She does not need this right now. Just be a simple human being, that care for her.
You have a lot of hope, but you also have a lot of work since she is not taking a decision because she wants more then anything else in her life. There are so much more then you may not know. Her family, some friends, this OM... every word that people said to her may be playing in her mind over and over.
I would say, have a room for her to put her stuff, sleep alone, give her some space to approach you. Don't force anything, let it happen.
About the driving for so long together. You can make it a hell or you can make it fantastic and enjoyable for both of you. Great idea from V, have a good music selection, some that she may like too. You are a faithful man, there are some great Christian music with great words, strong stuff in it, meaningful.
Look at the whole map and try to set up some stops that will bring joy for you two. When you pick her up, don't give her presents. Give her one rose with "You are beautiful". This may break some of her "Madness".
If she is in those days, make sure you stop in a lot of rest areas. Be a gentleman.
I am sure you will do well. Our adorable T, young and fresh have been learning a lot. Don't panic, believe in yourself. Believe in your changes, believe you are a man of valor.