I really hope when this ends she gets some real help. Her mom meddles in ways that hinder her more than help, her father looks the other way, clearly caring about her but unable to actually do anything for her, and her sister time after time "inadvertently" finding ways to either humiliate her or make her feel genuinely uncomfortable. (I'm using the largest of possible air quotes here, I'm genuinely starting to think she enjoys messing with Neeko)
I have no doubt in my mind that her family loves her, I just wish they'd realize maybe she needs some actual help, with people trained to deal with these things. I get mental health issues is like a huge taboo in Japan, but it's really hard to read. Each time I read a new chapter I have this vain hope that it's going to end with her in a place better than she was before, and it always ends up worse or on the same line.
I think she is the only one who can help herself, bit by bit, building self confidence and just putting herself out there in scenarios out of her little safe space, I'm sure she'll find her way. It seems a bit extreme how her family treats her, but wrapping her in cotton and babying her won't help her at all, they are all she has and she's a good person for trying for their sake as well, that's how it is with family. Ganbare Neeko!