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

"Excuse me, but this is confusing, so who will I be calling Mila or Ethel?" Greyson asked, confusedly.

"I think she's Mila. She doesn't have a memory of being Ethel." Mila pointed at her other self, who has the appearance of Ethel.

"No. I think it's better for you to keep the name because you have the appearance of Mila. You don't have to worry. I can adjust well. I can be Ethel."

Greyson becomes more confused because they all know that the two women in front of him are actually the same person. The only difference is that they came from different versions of the same world.

"Wouldn't we get more confused if you take Ethel's name when you're the version that hasn't been possessed by Ethel yet?"

"But my appearance is that of Ethel. So it's better to call me Ethel."

Greyson nodded as he agreed. "I think she's right. Appearance wise It's less confusing."

"Once we see each other again."