MaryahLu

"Why do the main character's parents often get the short end of the stick?"
That is what Mila asked while looking up at the sky. She was grumbling toward whoever sent her inside the novel she read before she died.
She becomes the mother of the main character, whose parents are both dead. Mila's character was merely a tool for the MC's character development.
It's a simple, fix-all solution. The author wanted to make the audience instantly sympathetic towards the main character, and the best thing he did was to have the MC's parents die.

After she avoided her death in the original plot, death flags kept coming for her. 

Will the original plot not end if she's not dead?

....

proofreader: Aserehtam

Main character's parents must die

"W-why are you both here?" Berto asked.

His heart automatically beat fast the moment he found out that Ethel and Christopher were waiting for him at the lodge. He was still on duty and wondered what else the others had brought for him.

"We can't contact Mila; she hasn't got home since she went to work." Ethel stated.

Berto rushed back to his locker to get his watch and phone. Ethel and Christopher just followed him and felt relieved that Berto would know where Mila went.

"Mila didn't text me. Are you sure she's missing and not just at her work?" Berto asked as soon as he checked his phone. He and Mila rarely text each other, especially when they are working. It is also not strange to stay at work for that long, so Berto finds nothing strange yet.

"We don't have any means to confirm if she's safe. That is why we came here, uncle."

"Of course not."