This could be a major contributing factor to her attitude...it sounds like she believes SHE "gifted" you with continuing the marriage, and you are indebted to her and should be grateful.She wanted out of the marriage in 2013. I had to struggle and fight to keep us together. It was an awful time.
I really didn't expect that she was going to give up her royal position to you...like I said, in my personal experience and from what I've seen in other couples with a similar dynamic, the partner who has the power NEVER relinquishes it without a major fight, if at all. And many are willing to destroy everything to maintain their power (like my STBX).
It's a PROCESS. And if you are willing to stay and remain powerless in your relationship, it's best to recognize that and embrace it (like you have) and work to negotiate for some of the needs you have that she is more willing to meet. There ARE people who stay in a situation like yours and are moderately satisfied, if not completely happy. Several are here on TAM too. So you are NOT a failure or weak at all, and I hope you don't feel that way -- you are just trading one thing you want for something else you want more. And there is NOTHING wrong with that at all.