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

"If you neglect your own needs and abuse yourself because someone has stopped loving you or hasn't even tried to. How despicable would that be?

What do you think your unrequited lover would think of you if they found out you had been destroyed or devastated because they had stopped loving you?

Do you believe they will harbor sympathy for you and turn to you again? You already know that they won't.

They may even rejoice that you depend on them and cannot function without them. Or, even worse, they might mock you by referring to you as helpless and desperate.

You probably don't want to be the target of sympathy. Do you?

Love yourself, take care of yourself, don't turn to smoking or binge drinking, and keep in mind that you had a life before falling in love with that person.

Why mope for someone who doesn't love you when there is only one of you and you have one life to live?

"Good for us."