What's it like to have a nasty sister-in-law?

In fact, many sisters-in-law didn't put their minds right, thinking that they had robbed their brother, and his brother was bewitched by his sister-in-law and didn't treat himself well. . . However, after getting married and becoming a sister-in-law, the sister-in-law will also hate such a sister-in-law. Originally, in a marriage, two people were the closest relatives, more than brotherhood. My brother is married, and my sister-in-law had better voluntarily withdraw from my brother's life circle. So that the family can be harmonious.