This isn't exactly the advice you asked for, but this situation looks like so many red flags to me.
I have a friend who's a really kind, caring guy, and doesn't like conflict. His former partner dragged their finances down really badly - he contributed much more to their finances than she did, and she considered that his responsibility, and habitually quit jobs whenever she felt like it regardless of how bad their debt was getting. There were also other, non financial problems. The first time they split up, she emptied their joint account and left, leaving him with their lease and all the bills. They tried to get back together and make it work a while later. She was physically abusive on at least two occasions near the end, which I know about because I was on the phone with him during both. It was scary.
And then there's my own ex. I made a lot more, but he promised to contribute something to expenses when he moved in. He took some time to find himself after being fired for getting physically I'll from stress, which I was ok with. He gave up on his side gig (I don't know how successful it ever was) to learn something new, which he never got very good at, but was really insecure about criticism. Conversations about him getting another day job always became uncomfortable and ended quickly, because I didn't want him to feel unappreciated or that I only cared about money, maintaining the status quo of me paying for everything. He never paid for anything but our Netflix, which I wouldn't have bought on my own anyway. My family thought that was a big problem; I thought they were being materialistic. He cooked all our food, and cleaned enough that I usually didn't have to, and he had much less earning potential than I did, anyway.
After living together for over 1.5 years, I realized he had a bad temper, and as someone who easily feels guilty, I shouldn't be dating an easily angry person. So I broke up with him. He was extremely manipulative during the breakup. It also came out that he'd been mean to my friend behind my back to isolate me, stolen a gift from another good friend (my future fiance), and been incredibly manipulative all through out relationship in ways I hadn't realized until it was over. When I finally got him to leave the house (I was staying elsewhere at the time), he pepper sprayed the matress I'd bought for him, which I didn't realize til I tried sleeping there myself a month later.
My point is that paying yourself for everything or most things, while your partner could easily contribute more but chooses not to, is a sign they don't care about your well-being and success all that much. It doesn't always end with poisoning like it did for my friend and I; we were really unlucky. But I can't help getting the sense this lady didn't care about you that much even when your relationship was more secure. Leaving you paying for everything because paying bills is difficult/boring/unpleasant seems really uncaring. Did she ever offer a way to pay her half, or ask you to suguest one? We're there ever conversations about her contributing that got awkward so you just let it go, or she changed the subject, or made you feel bad for bringing it up?
Just, take care of yourself. Really think about your relationship. Ask your friends what they think of her. Be careful.