I mean if her whole family is screwed she's effectively also, by being part of it, screwed, and besides she still has her mother and her father doesn't seem that hate-worthy. Now, her siblings on the other hand and her step-mothers... BURN BiSS!!! Her now deceased older brother was also part of the family and MC was close to him and she wants to fulfil his dream for him or something, can't do that if your entire basis of social standing crashes down!