When she comes back and sees your new look, she is going to think you are doing it for some OW.....which could be a good thing! She's shown signs of jealousy and in my bood that's good. If she had no feelings for you then she could care less if you dated.
My suggestion is to stop "proclaiming" your faithfulness to her. She is in process of D you. That means she is not intitled to know your whereabouts, etc.
Be polite but not overly interested in her conversations. Everytime she sends a TM just smile and know she's still keeping you on the end of her rope.
What would happen if she really got a taste of D before it was final? What I'm saying is what would her response be if "you" dropped the rope? And, don't be afraid of making her angry.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!