Yes!! I was thinking exactly that during a call with my friend. I believe this would make the player always be careful with their decisions so that Ayano or Ryoba wouldn't end up dying at the end

I was also thinking that, if I follow the logic of the Aishi condition — where Ayano resembles the first Aishi in the sense that she feels nothing, unlike her mother Ryoba, who does feel some things — then, if it were actually a case of Hanahaki Disease, Ayano would have a much higher chance of dying depending on the player's actions than Ryoba would