Believe me, I can empathize. My W did very similar things to what yours has, is very stubborn, the whole thing. She even told me about 3 weeks ago talking to me "made her want to vomit".
I GALed my butt off, several 180s, several mistakes; and I got divorce papers on 8/19 for very serious grounds. I can remember screaming in my car I was so full of anger and hurting so badly - I hope no one thought I was a psycho!
Since 8/19 and filing horrible divorce papers, my W has come to me and admitted she loves me, wants to be married to me, and was doing wrong. This after saying we're done, too much bad has happened, we can never recover, all that script stuff.
Then she went back into divorce mode; then as recently as a few days ago, was hugging on me, asked me for time to think about us before finalizing the divorce, etc.
I said all that to say this - I've gone through what you've gone through, and felt the way you feel. Just like you I went through a week of almost no contact, and W responded very nicely. I'm actually in the start of another one.
Hang in there - go for a walk; punch a punching bag, run until you can't run anymore; post your thoughts on here. I know the rules say no family/friends; but I have a great friend that will listen to me and give me sound objective advice - same friend also loves W dearly so never takes my side against her.