I think this would be considered domestic abuse...the sad thing is that this is likely the most affection that Blonde here got if you exclude all the physical abuse she got (Her younger siblings probably too young to know she is being neglected physically and emotionally, wonder if her mother [Possibly might be a commoner] died and the step-mother just hates her for random non-nonsensical reasons to isolate her...).
You know...I would have been fine with this story if the 'stupid' cat girl actually shown affection and love toward the blonde [Blonde was putting in all the fking effort in learning her language as well]...But it felt like Cat girl was just using blonde for her own purpose (Never calling her name till the end despite the possible weeks)....Reason why I never finish (Kitanai Kimi ga Ichiban Kawaii)...It felt like that manga was heading down towards a bad ending from the chapters I read before I left it unfinished.
Not even a fking "Thank you, I love you"....Just "good girl". RIP...I hope one day, blonde here will grow up and do a reversal and dominate the cat girl in the future (Fat chance and unlikely but there is still that 1% chance...). If there was signs of 'love' and 'affection' then I wouldn't find this situation for blonde to totally sad and depressing situation...Blonde latching onto the only person/cat girl showing her any signs of love or affection.
I could be totally wrong though and I might be missing some weird tiny underlying signs that Cat girls actually does love Blonde but perhaps I might be totally clueless and unobservant to notice?
Though this kind of work and manga is very in line with the author's previous works, though some of those stories had happy ending despite the fked up stories.