Also, I'm really sad to see so many people being so harsh and judgmental of Hari... accusing her of not acting like an adult...
I actually think this is incredibly realistic. Hari is not a kid, yeah, but that's actually what's chaining her to this course of action. She has twenty years of trauma and feeling alone and unloved to supplement and overshadow what is happening in this present.
I mean, what is she supposed to do? She knows what the Hari "of this time" is supposed to mean to the brothers, and she also "knows" what the Hari is the future is going to grow to mean to them (not a lot, she thinks). At this point in time, and as far as she knows, DUE to 20 years of living as their "sister" but never being accepted, there is no reason they will help or believe her.
She didn't do anything about her own abuse because, based on her memories of that time, she thought she was the only one going to be abused and that the aunt's presence will help the kids (as stated in the chapter she appeared), and now the aunt is pressing on all the insecurities she has not from a couple of years in the family, but the baggage of TWENTY YEARS. It's impossible to be objective in such a situation and seeing it for what he is. it's going to literally take YEARS for Hari to truly, full-heartedly believe this family cares for her as much as she cares for them, because she has decades of memories where that's not the case. It's trauma, y'all.
In short, I feel Hari's actions all stem from actually being an adult, and the superimposing of her past (as an adult) and present (as a child) which makes it incredibly hard to see clearly.
Sorry for the long post, just have a lot of opinions lol~