I think it's pretty realistic. How many actually know if someone has depression just from looking at them because often times they're good actors wearing cheerful smiles on the outside. In this story's defense, people completely missed the point of why she snapped, because she was reminded of the birthday of someone she thought was not her, something her mother created. Her actions to me feel like she's not trying to outright reject being 'Hodaka' but more like a subtle cry for someone to help her resolve with her former self (terrible mother doesn't mean you have to hate yourself too). And i think regardless of how you want to abandon your former self, it is still a part of you, presented outward through subconcious actions like how the MC said the way she ate was elegant. I really think to move on you have to embrace your past and thus she did. One more thing i like about this story which is also hated is the talk at the end. It's not trauma dump when the talk is mutually consented. They're talking like adults and i think it's a nice and mature way to resolve problems, more story should include this, in fact.
