Ko_ko's Manga

I believe this comic is an adaptation of the novel “Please Save My Child”

Here is the novel synopsis:
Eugene has reincarnated into the body of “Reina,” a single mother with a daughter. Luckily, the confusing transition only lasted a short while, and she adjusted to her new world quickly.

After she had lived for 4 years as “Reina”…

She suddenly receives a threatening message informing her that she must kidnap the Princess of the Duchy if she wishes to have her daughter back.

As she sinks into her despair, she suddenly recalls a certain novel she had read before.

“…No way.”

A character who was arrested and executed after being blackmailed by an unknown villain to kidnap the heroine.

A character who was merely a tool in confirming the love that the heroine’s father held for his daughter.

That’s what “Reina” was destined to be.

***

“There are enemies who intend to kidnap Lady Estelle.”

“Finally, opponents who willingly seek death.”

“I-I can help you capture them.”

There was a long silence.

“You will help?”

Reina nodded and unfolded the small piece of paper she had hidden in her apron pocket.

“The person who intends to kidnap Lady Estelle wrote this letter to me.”

“…!”

As soon as the duke reached out his hand to take the note, Reina quickly hid the note in her pocket. She could see the rising anger reflected in his eyes.

“In exchange, I would like to make a request.”

She holds back her tears as she continues speaking.

“My child…”

“…”

“Please save my child.”