Man, with what little backstory they gave about her so far, i cant really feel bad for kirari right now.
It seems she has a good family at least? They didnt reveal anything aside from her aspiring to be an author which can be frowned upon by trad asians.
Being so embarrassed by her mom is normal, but hers seemed more like she just projects every negative thing to her. Like what was so embarassing of handmade stuff to show appreciation (and lowkey bribe really lmao) to the only friend she has? Thats better than nothing.
So i can only see her problems as a result of her own insecurities and really low self esteem... and with that shes so easily manipulated. The type to become a blind follower in cults.
Could be the wrong environment, hasnt found any normal and good comrades that share her hobby, having a solitary school life,