While Mielle is just a kid, she still chooses to try to fucking kill Aria. I see no one trying to defend Aria when she had villainous behavior as a child, she was brought from nothing and all of a sudden given a place in a aristocratic household. Yet, due to her lowly birth she received just as much attention as a houseplant, except for when she threw fits. Aria has to see the woman who caused her so much pain for years, every fucking day. She's flung back into the past and has to relive people insulting her, and instead of going mad and just straight up attacking Mielle, she chooses slow revenge. Not a lot of people could do that. So many people try to sympathize with Mielle and not the MC, and to those I ask, Why???
Tldr:
@Viviyan had a really good comment, too many people sympathize with Mielle but I don't see anyone sympathizing with Aria before her second chance or when she was more "villainous."