There are six people in my family. When my sister-in-law married into the family, we simply added another set of bowls and chopsticks. But along with that, our family dynamics changed significantly. The biggest change? Our patience had to grow exponentially—because my sister-in-law is an impulsive person.

Whenever anything happens, she immediately blames someone else, often making wild accusations without thinking things through. If she turns out to be wrong, she conveniently ignores it. But if she’s right, she never misses the chance to say, "See? I told you so!"

Her bad habit of jumping to conclusions has caused no small amount of trouble for our family. Neighbors, friends, and relatives have all been rubbed the wrong way by her at some point. I’ve tried advising her to mind her own business and, if she must gossip, at least keep quiet and not exaggerate. But my words go in one ear and out the other. She never changes, and drama follows her everywhere.

Just the other day, my parents got a visit from the neighborhood chief, who came to scold them in person. The reason? My sister-in-law had been spreading gossip about his family. His son had been caught cheating on his wife with a coworker, leading to a big scandal. My sister-in-law, who has a friend at that workplace, got hold of a video of the confrontation and some details about the incident. Instead of keeping it to herself, she decided to turn it into a full-blown soap opera.

She added all sorts of extra details, twisting the story into something even more shocking. By the time she finished retelling it, the mistress was suddenly pregnant, and the whole neighborhood was buzzing about it. The neighborhood chief was furious. His family had already handled the situation privately, but thanks to my sister-in-law’s meddling, their personal issues became public entertainment. Enraged, he stormed into our house, berating my parents for failing to "properly discipline their daughter-in-law." He accused her of spreading falsehoods that damaged his family’s reputation. My parents had no choice but to swallow their embarrassment, apologize profusely, and promise to have a serious talk with her.

Because of this mess, my sister-in-law was reprimanded by both our family and her own. My mother even called her parents, asking them to "talk some sense into their daughter" since our warnings had gone ignored for too long. My mother never wanted to complain to her in-laws, but she was simply at her wit’s end. Exhausted from dealing with my sister-in-law’s thoughtlessness, my mother felt she had no choice.

Upset at my mother, my sister-in-law went into "silent protest" mode—refusing to eat meals or speak to anyone in the house.

The False Accusation Against My Mother

Today, while I was at work, my mother texted me, saying:
"Maybe we should let your brother and his wife move out. I can’t deal with her anymore."

I was shocked and asked what happened. With a deep sigh, my mother explained that my sister-in-law had falsely accused her—again.

This morning, my sister-in-law received a call from her child’s kindergarten teacher. The teacher informed her that my niece’s hand was swollen and bruised. No one knew how it happened, but she had already arrived at school with the injury. My niece is quite clingy and cries often when being dropped off, so no one realized she was in pain. It wasn’t until lunchtime, when the teacher carried her, that she noticed the two middle fingers on her left hand were badly swollen.

Panicked, my sister-in-law rushed to the school and took her daughter to the hospital. The doctor assured her that it wasn’t serious—probably just a minor injury from getting pinched somewhere. A bit of ointment, and it would heal in a few days.

However, the moment they returned home, my sister-in-law immediately accused my mother of causing the injury.

That morning, while getting ready for school, my niece had spilled a bowl of noodles in the kitchen. My mother, slightly annoyed, lightly tapped her hand as a small reprimand. That was all. But my sister-in-law insisted, "Mom must have hit her too hard! That’s why her hand is swollen!"

Does that even make sense?

If my mother had used a stick or some object to hit the child, maybe. But a light tap with her bare hand? That wouldn’t even leave a scratch, let alone cause swelling.

I thought about it for a moment and then told my mom to check the security camera footage near the front door. And there it was—the undeniable truth.

Earlier that morning, my sister-in-law had woken up late. In her rush to get her daughter to school, she accidentally slammed the child’s hand in the door. My niece had cried at the time, but since she had already been crying from the scolding, my sister-in-law didn’t even notice the injury.

When my mother played the footage for her, she fell completely silent. She couldn’t argue anymore.

My mother firmly warned her: "From now on, stop making baseless accusations. This kind of behavior will only make people resent you. I’ll let it go this time, but if you ever falsely blame me again, I won’t stay quiet."

Embarrassed, my sister-in-law made an excuse to take her daughter to her parents’ house. Just now, she texted me, asking me to request permission from my parents for her to stay the night there.

When my brother found out what happened, he was completely fed up. My mother suggested that he and his wife move out—rent a place if necessary—so she wouldn’t have to deal with the stress anymore.

My brother looked genuinely lost. He probably doesn’t even know how to help his wife get along with others.