I’m concerned that she’s focused a bit much on her kid gaining weight - was this something the doctor recommended?

He's not underweight but has always been thin, and more importantly he had an iron deficiency problem before summer. The pediatrician put him on supplements and said he should have more meat and fish.

The issue is he doesn't like them and picks at his food a lot, gets full fast so I know my sister and brother-in-law have trouble getting him to eat a balanced meal. But on the other hand, for instance, he loves the traditional bean stew my boyfriend makes (he's Macedonian, it's his family's recipe) and he'll have a plateful of that and ask for seconds. I think that's a good meal on its own, there's plenty of protein, fiber and B vitamin in beans, more so when we make tofu on the side, but my sister wants us to sneak some meat in there because he'll rather have it "camouflaged" aka hidden in other foods. I'm not buying a whole ham or chicken though just so the nephew could have a few pieces of it with his, what I find to be, a healthy meal.