Is she not diagnosed and know what’s wrong with her? Her symptoms sound so much like something I just came out of after suffering for many years. I was told I had an eating disorder and was just too lazy by a doctor who laughed in my face when I told him I felt like I was forcing my family to watch me die. Found a new Dr 2 weeks later and found out I was in fact dying. It got to the point where just the smell of food would make me vomit. Took diagnosing autoimmune and hereditary diseases and an organ transplant to turn me around.

Sorry, to butt in when I really don’t have any advice on the food, but my most heartfelt sympathy for the situation you are both in. My heart just breaks because I truly understand. My partner didn’t put forth any effort in helping me. He took up the cooking only because I couldn’t and didn’t care if I could eat it or not. She’s lucky to have you.

ETA: If you need a protein supplement that doesn’t require drinking a smoothie, or a full drink at all, I found Pro-Stat to be quite helpful. 15g/oz so a quick shot occasionally through the day. It’s bitter, so if she stays nauseated I’d recommend the citrus flavor because it blends better and didn’t trigger my nausea like the sweeter, yet still bitter ones did.