Hold resentment towards whom? Her father, who sacrificed himself to be at the Frontier until things get better? Her oldest brother, who sacrificed himself to be a dog for the Queen? Her other two brothers, one who doesn't know how to show affection properly due to being a child while the other one did his best to stand up for Rie?
Her grandfather, yes, I would agree to have some resentment towards him (and the family that was trusted to watch her) because he could have handled it better rather than forcing himself to act cruel towards her just to keep the appearance of her mistake of not having mana.
I can tell you, she won't be bitter about it at all. At least, not in a way you would hope.
Ugh- is this fr?
I know she was just 10 at the time of her death and what not BUT ten isn't so young that a child doesn't hold even a big of resentment. Atleast, the children aren't thinking, "I must save my family, no matter what"
I just hope that somewhere along the way, as her mental age further increases, she can feel more bitter.