hi
@sheepshanks. Your wife is very lucky to have you so onboard with lower carb meals!
Something to bear in mind is that many many doctors are not knowledgeable about nutrition, or as knowledgable as you are.
I do believe you and your wife should load up on knowing about different ways of eating yourselves to write your own shopping lists and menus, as it can get confusing getting out of context food advice from medical professionals. I've heard some utterly illogical food advice from lots of doctors over the years, and my feeling is the best docs re type two are docs that stick to what they are expert in - diagnosis and medications and referring you to the right specialists.
Here. (Your doc included carrots and parnips as no-go foods?! Wow! Harsh for someone recently changing their diet due to Type two...) And being in this forum is a great place to start (or even end up at permanently).
Dairy and eggs are low-carb and high in healthy protein amongst other wonderful things, and if you and your wife are dairy tolerant (you will know if you are not!), then they can be wonderful parts of a healthy diet for folks in such a household. Ditto meat and meats.
But yeah - the potatoes, pasta, rice and bread will raise her blood glucose for sure. There are a bunch of low carb and Keto breads for sale now to choose from, so sandwiches are not out - but I doubt you will be wanting to eat almond flour based bread if you can eat wheat bread quite happily! Almond flour based breads cam be part of a lower carb/low carb diet with the goal of keeping blood glucose in check via what you eat, and don't eat.
I eat pasta and rice substitutes made from konjac root, but that too is an acquired taste. I doubt you will be wanting to eat those products. And you will have to see how your wife feels about it. All of these foods.
Over time what goes on your shopping list and home-menus will be obvious! Especially once you try out different ways of eating perhaps, with lowering blood glucose (and high own body insulin) in mind. I mean - mediterranealn, low carb healthy fat (LCHF), paleo, keto, vegetarian, vegan... just off the top of my head.