Lol, I had someone else say this so just gonna copy and past.
Then you must not like realistic stories. Go read those suddenly OP MCs with cliché sub characters. The reason why she's like that is because she's doubtful of everyone. Think of real word situations, why do you think its so hard for people to come out with abuse or rape stories. They have definitely seen people win and have good people in their life's. Its not that easy to trust someone when you've had a life filled with betrays and mistrust, weather or not they have been kind to you because you don't know if they mean it. That's realism.
See the power of copy and paste lol (〜 ̄△ ̄)〜
Then you must not like realistic stories. Go read those suddenly OP MCs with cliché sub characters. The reason why she's like that is because she's doubtful of everyone. Think of real word situations, why do you think its so hard for people to come out with abuse or rape stories. They have definitely seen people win and have good people in their life's. Its not that easy to trust someone when you've had a life filled with betrays and mistrust, weather or not they have been kind to you because you don't know if they mean it. That's realism.
lol whoops continuing on. Realistically speaking, you would want to get the frick outta there; not just chill and hang around the very people who murdered you with no sense of purpose. Tbh I don't think the story knows where it's going. Typically with stories like this where mc gets a second chance at life theres always some sort of purpose to it. Imagine getting a second chance and deciding ykno what, lets just do an entire rerun of the same thing (but with a couple changes of behavior thats gonna def save me because power of plot). She doesn't have any purpose or goal and is really passive. Basically I dont see the point of letting her get a second shot at life when your gonna be so passive and barely do anything. The title itself is "please throw me away" like wtf bruh just get out, do something for gods sake
Eh, I think were to early in the story, maybe it's a short paced long story. She knows what to expect from them and so theres no point going somewhere else where you can't trust anyone and dont know what to expect. Maybe it's because I would most likely be like her if it happend to me. Maybe it's your personality because I would stay for a while and figure out a plan of action. Her only goal is to just leave the family, she isnt really looking for revenge. Its after she figures out everything and has that guy tell her does her mind start to change as she knows more information. Personally I dont really like those stories with strong FLs as much as this but dont get me wrong weak FLs suck. It's just that I relate more to her than them. Not trying to be rude or anything.
What? She knows to expect that they'll send her away to be murdered and there's no point going somewhere else? I can't understand that logic but if other people do then I guess thats fine for them. See right now it doesn't even seem like mc is trying to figure out any plan of action. If her goal is to actually leave the family idk why she hasn't done it already or tried to prepare for it. Being physically "strong" isn't necessarily what makes a strong or good character. There are manga with mc's who were just given super strong op powers for plot but I would consider a weak character because they have no depth or personality. Really just depends on how you define "strong"
She knows how long she has until they send her away. She thought that the birth of her sister was what made them ignore her or something so she was waiting for that moment to execute her escape. I ment sassy strong FLs that never seem to cower in front of anything, I can't relate to them as much as I can relate to a strong but traumatized and abused one. Most of those FLs are for revenge for romantic relationships.

tbh she's stupid, she wanted to change her life yet when an opportunity knocks she ignores it, she isn't even doing anything to get out of her situation and to counteract her foster family's abuse, i really couldn't understand her character smh is she a masochist or what?