Might sound a little cruel, but maybe Mita should abandon some of these responsibilities. She's not the one who put her siblings on this planet. Whilst it may not be nice to her siblings, ultimately it should be her parents' responsibility to fund them. Sure, her family won't be nice to her over it, but then her mother is already being very destructive. This way she could hopefully save more money to eventually leave the place and live on her own or with roommates that don't tear her down every opportunity they get.