UPDATE: My partner (F50) has uncontrolled type 2 diabetes. I (M43) got her to see a doctor and she got diagnosed with something even more serious. I'm blinded by anger and frustration.

First of all, thanks to everyone for all the helpful comments and suggestions. Here's the update:<br><br>My wife and I had a long conversation yesterday and I convinced her to see a doctor. After about 2 hours of diagnostics, and 2 hours afterwards in which she refused to let me into the examination room with her (she still was stubbornly denying the existence of COVID), a doctor finally came out with some news for me. <br><br>His diagnosis was that my wife was suffering from very severe insulin resistance, to the tune of something like 10x the norm (this was the reason she was developing all of the skin lesions and she would have been dead within a couple months), and that he was starting her on very high-dose Metformin, along with a strong warning about getting some exercise and avoiding sugar and carbs. <br><br>Now...I know that the internet isn't medical school, but I still did a ton of reading about diabetes, and none of that made sense to me. Everything I read said Metformin was only for initial stages of type 2 diabetes and was never used in high doses for advanced cases with patients in very poor health. Furthermore, he didn't even do a blood test for ketones, which my research indicated was standard for diagnosis of advanced cases of T2. He didn't seem very concerned with my wife at all and looked at me scornfully when he noticed my mask. <br><br>So, my wife comes out with this diagnosis, and I ask her if she's upset at all about the situation. She just says "I told you I was fine. And I still am"<br><br>This was it for me. I was so angry and frustrated that I nearly lost my temper. I demanded to know how she could look at me in the eye and say that and she just told me that she didn't like my tone. At that I blew up at her (not literally, but I did raise my voice). I told her that she was selfish and inconsiderate of everyone around her, that she did not care one bit about anyone but herself, that she was going to look to her children when they came to visit for Easter and tell them that she was "Fine" with a straight face while she was secretly dying, that she was putting everyone who loved her in danger of COVID, that she had no concern for anyone in the world, including me. <br><br>At that she told me that, yes, she was putting her own needs first (she has been doing that for years, see my other post history) and that if I was so concerned about her health I should have left years ago. And with that, she walked away from me and went to her bedroom. I have not seen her since. <br><br>So...now I need advice on what the next steps are. I want full legal separation, and if I can do it without screwing over my children, I want a divorce. She will not end up back in my house after we separate, and I will no longer be paying for anything having to do with her. She will also not be welcome at my place of work. <br><br>So, what now? I'm going to let some time cool down before I talk with her, but after that, we're having "the conversation".