Sentiments.
The sister, of hers who is younger than her, by five years, protected her like an old hen, protecting its eggs. Growing up, nothing changed a lot, in her, but the drastic change in her sister, was after their father's accident. As if, she wasn't that clumsy, foodie, carefree anymore. She herslef, as an elder sister, can no longer recognize her.
To sit down and think, there were minimal changes in her, after the 'incident' happened on her, but drastic change after her father's accident.
"That day at the hospital, when Sid Bao visited, if not for ZouMi standing up, we..." Their whole family would've wiped off, that very night, by Sid Bao!