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

Mila's statement doesn't make Robert feel reassured, even a little. In his mind, he thought that when he was no longer attractive or if his face and body changed to be less attractive, then he would be discarded as well. He felt ridiculous about how childish his mind was thinking now that he had become silent instead of replying to what Mila had said.

"What? What's wrong?" Mila asked. She doesn't quite get what's making Robert feel upset. She thought she did well at finding a husband who would help her survive, but with no ability to surpass Robert. She thought once Robert met Berto they would be friends, as he also quite liked the character of Berto.

"Nothing. He said you needed to go to work. I'll help you get ready," Robert said, avoiding Mila's question. He then carried Mila inside the bedroom and left Berto, still hiding behind the in-door plant.

"Let me tour you around"