I stopped at the top of the stairs.

Co Dien was still speaking.

—Lang Vi’s landlord suddenly terminated the lease.

—She has nowhere to go with the child.

—It’s only two days.

Co Chinh Dinh slammed his palm onto the desk.

—Then pay for a hotel!

—Why does she have to live under the same roof as your wife?

Co Dien’s voice became impatient.

—Tri Ha is reasonable.

—She won’t misunderstand.

I almost laughed.

Reasonable.

That word had become a weapon.

Whenever someone wanted me to endure something humiliating, they called me reasonable first.

Then To Nguyet Hoa spoke.

Her voice was very calm.

—Bring her.

The entire study became silent.

Even I thought I had misheard.

Co Dien turned.

—Mom?

—Didn’t you say she has nowhere to go?

To Nguyet Hoa picked up her teacup.

—Bring Lang Vi and the child tomorrow.

Co Chinh Dinh stared at his wife.

But she only glanced toward the staircase.

Our eyes met.

Then she gave me the smallest nod.

Don’t rush.

Look at me.

I remembered her words from the shopping center.

So I said nothing.

The next afternoon, Lang Vi arrived.

One suitcase.

One child.

And an expression that tried very hard to look embarrassed.

The boy was about four years old.

The moment he entered, he ran straight toward Co Dien.

—Uncle Co!

Co Dien immediately crouched and lifted him.

The movement was practiced.

Too practiced.

The boy wrapped both arms around his neck.

I stood beside To Nguyet Hoa.

She asked casually:

—What’s his name?

Lang Vi smiled.

—Bao Bao.

—How old?

—Four.

To Nguyet Hoa nodded.

—And his father?

The smile froze.

Co Dien immediately answered.

—Mom, don’t ask uncomfortable questions.

She looked at her son.

—I wasn’t asking you.

Lang Vi lowered her head.

—His father isn’t involved.

That evening, To Nguyet Hoa arranged two guest rooms.

Separate rooms.

One for Lang Vi.

One for the child.

Co Dien frowned.

—Bao Bao is afraid at night.

His mother replied:

—Then his mother can stay with him.

Nothing more.

During dinner, she watched everything.

How Co Dien knew Bao Bao hated carrots.

How he cut the meat into small pieces without being asked.

How the child automatically reached for his phone to play games.

And how Lang Vi kept looking at Co Dien with the confidence of someone who had already practiced being part of the family.

After the meal, To Nguyet Hoa finally put down her chopsticks.

—Tri Ha.

I looked up.

—Come with me.

She took me into the study.

Then locked the door.

On the table was a folder.

Inside were bank statements.

Hotel records.

Apartment payments.

School tuition.

Transfers from Co Dien to Lang Vi dating back almost three years.

My hands became cold.

—Mom…

—Keep reading.

There was more.

A copy of Bao Bao’s birth certificate.

Father:

Blank.

Then a photograph.

Lang Vi standing beside another man outside a maternity center.

The date was four years earlier.

I looked at To Nguyet Hoa.

—Who is he?

—Lang Vi’s ex-husband.

My heartbeat stumbled.

—Ex-husband?

—They divorced two years ago.

She tapped the photograph.

—But Bao Bao was born while they were still legally married.

I stared at her.

Everything suddenly became more complicated.

To Nguyet Hoa continued:

—I knew Co Dien was sending her money.

—I didn’t know how far things had gone.

—So after seeing them yesterday, I hired someone to verify everything.

She pushed another document toward me.

—This morning I also spoke to a lawyer.

It was a draft divorce petition.

Already prepared.

My name on one side.

Co Dien’s on the other.

I looked at her.

She said quietly:

—Tri Ha, I am his mother.

—But being his mother does not mean helping him destroy you.

My eyes burned.

—Why bring Lang Vi here?

The corner of her lips lifted.

—Because people lie better when they think they are safe.

That night, the truth arrived by itself.

At nearly eleven, I went downstairs for water.

Voices came from the terrace.

Lang Vi.

Co Dien.

I didn’t step closer.

I didn’t need to.

—How much longer do I have to hide?

Lang Vi whispered.

—Your wife already saw us.

Co Dien answered:

—Give me time.

—My parents won’t accept you if I divorce immediately.

Lang Vi sounded annoyed.

—You promised that after Tri Ha found out, you’d force her to leave.

Silence.

Then:

—And what about Bao Bao?

Co Dien sighed.

—I told you, once everything settles, I’ll recognize him publicly.

My fingers tightened around the glass.

Then To Nguyet Hoa’s voice came from behind me.

—Recognize whose child?

The terrace went silent.

She stepped outside.

Co Chinh Dinh followed.

And I followed them.

Lang Vi’s face turned white.

Co Dien immediately stood.

—Mom—

To Nguyet Hoa threw the birth certificate onto the table.

—Bao Bao was born during her marriage to Zhang Wei.

—So before you announce anything, perhaps you should ask who the father actually is.

Co Dien froze.

Then slowly turned toward Lang Vi.

—What does she mean?

Lang Vi began crying.

—Dien, listen to me—

—Is he mine?

She couldn’t answer.

That silence destroyed him.

A DNA test was done three days later.

Bao Bao was not Co Dien’s son.

He belonged to Lang Vi’s former husband.

Co Dien sat in the living room holding the result for almost an hour.

Then he looked at me.

—Tri Ha.

I knew what was coming.

—Don’t.

His face stiffened.

—Nothing happened the way you think.

I laughed.

—You paid her rent.

—Her child’s tuition.

—You walked through a shopping center holding her hand.

—You wanted to bring her into our home.

I looked directly at him.

—Which part have I misunderstood?

He lowered his head.

—I thought the boy was mine.

—And that makes it better?

He had no answer.

To Nguyet Hoa placed the divorce papers on the table.

—Sign.

Co Dien looked at his mother in disbelief.

—Mom!

—You asked what you did wrong yesterday.

She pointed toward me.

—This.

Her voice remained calm.

—You made your wife doubt her own eyes.

—You used her generosity to protect your affair.

—And then you wanted to bring another woman into her home because you assumed Tri Ha would keep being “reasonable.”

Co Dien’s eyes reddened.

—I’m your son.

—I know.

To Nguyet Hoa nodded.

—That’s exactly why I’m ashamed.

The divorce took less than two months.

I didn’t ask for revenge.

Only what legally belonged to me.

Our jointly purchased apartment was sold.

Accounts were divided.

The money Co Dien had transferred to Lang Vi from marital funds was included in the settlement review.

To Nguyet Hoa never asked me to forgive him.

She only told me:

—Leaving my son does not mean leaving me.

And strangely, I believed her.

A year later, she still called me every Sunday.

Not to ask me to return.

Not to convince me that Co Dien had changed.

Just to ask:

—Have you eaten?

Sometimes we had tea.

Sometimes we went shopping.

The first time someone asked whether she felt awkward staying close to her ex-daughter-in-law, she answered:

—My son ended his marriage.

—I did not end my relationship with a good person.

As for Co Dien, he tried several times to reconcile.

The last time, he waited outside my office.

—Tri Ha, I know I made a mistake.

I looked at him.

—You made many decisions.

—Don’t reduce them to one mistake.

He became silent.

I walked past him.

The day I saw my husband holding another woman’s hand, I thought the greatest shock would be discovering his betrayal.

I was wrong.

The greatest surprise was the woman standing beside me.

My mother-in-law did not tell me to endure for the sake of the family.

She told me to watch carefully.

And when her son finally revealed exactly who he had become—

she didn’t ask me to save the marriage.

She handed me the papers that allowed me to save myself.