This story involves more about the mouse, than Cinderella. Though the mouse is a beastkin. There's no Fairy Godmother in this story, well actually can't even remember if there were. The importance is the mouse girl have important abilities to create medicine. And her helping out the family who took in and protects beastkin, that has nowhere to go, as they are shunned by majority of humans.
Also have to still find out, how to break her mouse family's curse of unable to turn into human form
(It been 4+ years already). Those related to Cinderella, are just side characters that are totally different then we used to, in personality. Or non-existent.
The majority you see, besides the mouse girl, are the 3 brothers, their grandfather, and their beastkin staff.

Haven't read it yet but I just realized, isn't this that one novel where poya(Artist of becoming the villain's family/siren) made the promo art for? Where the mouse can turn into human and the fairy godmother is a boy??? Pls tell me it's that one cus I always wanted to read it sm!!