Thoughts about the first and second part of The Vegetarian by Han Kang?

I want to know what everyone thought about the husband's and brother-in-law's pov. Personally I really loved In-hye's part. I think In-hye's inner turmoil is explored well. Somehow Yeong-hye's motives are also explored very well in this part even though she's almost non-verbal by this point. But with the first two parts, I feel like something is missing. I can't articulate what exactly it is that I feel dissatisfied with.