I agree with encouraging trying new foods, but not forcing it.
The thing that drives me crazy is when a kid refuses to eat a food they've never even tasted. How do they know if they like it or if they don't?
Fortunately for me, neither of my kids were picky eaters. In fact, they ate things that I wouldn't eat. I was a fairly strict vegetarian for many, many years, but I cooked meat and things for my children. I also promised them that I would never serve anything that I myself wouldn't eat, like liver and onions, for instance.
Both of my kids were very adventurous eaters. My son will literally try ANYTHING. Snake, alligator, chicken livers and hearts....blecchhhhhhh.
But...."How do you know you don't like it if you don't try it?" really stuck with him.
From the time my kids were super little, when we went to the grocery store, we hit the produce section first. First of all, they learned about different colors and textures. They were allowed to choose ANYTHING they wanted, but the deal was, they had to try it when we got it home. I didn't care if it was a $12 pineapple, if they chose it, they could have it. They were interested in watching me prepare it and helping out, and because it's what they chose, they were interested in trying it. I literally had people coming up to me in the grocery store and asking me if they just really did hear my kids begging for eggplant. Yep. They heard correctly.
To me, it was my way of giving them a learning experience and talking about how things grow. They got to hold their choice in the cart and they weren't allowed to ask for other things while we shopped. They got their choice out of the way first thing so there was no fussing and nagging for the rest of the shopping trip.
There really was a method to my madness. It worked great for us. My kids sampled just about every single thing you can think of. They loved brussel sprouts, broccoli, eggplant, kale, all fresh fruits, dates...you name it. They loved all kinds of things that they never would have experienced if they had refused to try it.
I think your husband is frustrated by your daughter's eating habits. He may have a right to be, but there are better ways than forcing a kid.
I'm 50 years old and there is something about creamed corn that I simply cannot stomach. I love corn, any way but creamed, and my mom tortured me on Halloween one year by telling me I couldn't go trick-or-treating unless I ate all of it on my plate. I tried, I vomitted.
To this day, I will NOT allow a can of creamed corn in my house.
Forcing just doesn't work.
Encouraging does.
Do you have room to plant a small garden? Even a container garden?
Carrots and zucchini are super easy to grow. So are pumpkins. Herb gardens don't require much room. If you can, have your daughter help you to grow some things. Let her pick the seeds.
You can also try my grocery store trick. At least once a week, let her choose something from the produce section with the agreement that she will at least try it. If you're not sure how to prepare something, just ask us.
Just my opinion and best wishes.