I watched my father flip through the address book while anxiously pacing around the house.

Suddenly, it seemed that a string of numbers and a name made his pupils tremble slightly.

"Could it be her?"

My father muttered to himself, staring blankly at that string of numbers.

Perhaps realizing he had misspoken, he told me to go back to my room and sleep, saying he wanted to be alone.

I nodded, feeling a bit puzzled before I quietly stood by the door to eavesdrop.

"Mom's health has been really bad lately... Please come and take a look..."

It was a young girl who answered the call, her voice choked with emotion.

"Is her life in danger?" my father asked cautiously.

Yet I could still hear the excitement in his heart.

"I don't know. She's been in the hospital for almost three months now, and her condition hasn't improved much. As you know, Mom has always been stubborn and refuses to see a doctor, which is why her illness has dragged on to this point..."

"Can I visit her?"

"Sure, if you're willing to come, I would be really grateful. I have to work during the day tomorrow, so I hired a temporary caregiver to look after her. If you come, please call or text me first."

"Okay, I'll call you tomorrow."

Through the door crack, I saw my father writing down the address of the hospital with a pen.

At that moment, a dreadful thought slowly emerged in my mind.

Why did my father suddenly call this woman?

He had already lost his patience with the fourth letter that never arrived.

What could be so important to make him so concerned at this time?