Her constant fight with Daksh, so irritating for me

She is developing a new habit of fighting with Daksh. She constantly annoyed with Daksh. When he does't play, she complait about not playing. When he plays, she complained about how he plays. Come on, he is just 9 years old. And, she has so much expectations from him.

From last few nights, we constantly sleep after listening her abuses and anger. I was listening to some night meditation music, I couldn't as she didn't stop shouting on Daksh for unnecessary things. Daksh is naughty, but thats the way he is.

I feel very bad from Daksh's point of view. In the whole day, he had to listen a lot from her. I also shout on him. I remember, around 80% of the times, I shouted on Daksh because of her. I mean, I see he is playing. But as he makes noise. This irks her usually.

Today morning, he wake up. I do not know why she started shoutig on him again. And, it lasted untill I told her, what happened. 

I asked her: What happened. He is our child. Why are you keep on yelling at him since night. Her reply, he is so annoying, doesn;t listen. Look at other kids, all are so smart and obidient. I stopped her, saying every child is unique. She just left. But she stopped after that (for few times)