Hi,
Most slow cooked foods like pulled pork, stews, etc. go very soft. And there are a LOT of low carb, or LC adaptable recipes.
You could also make soups - basically all the ingredients (meat, fish, veg, etc.) that your partner is eating, tip them into a pan with some stock, and blend with a hand blender. Instant, thick, lovely soup.
For example, one of my favourite soups is Roast Chicken.
I rip the chicken, including skin, from the bones, and pop it into the blender with all the Sunday roast veg, and bacon and/or herbs, if you like sage and onion stuffing. Top up with chicken stock and blend. Lovely.