アイビー

She worked as a hostess at the same club as Shrewd Lou's wife, Siu Wai, but left the club when she got married and had a baby.
After the divorce, she started working at the Amaryllis nightclub.
She kept in touch with Siu Wai as a comrade in raising children as a single mother, and provided information to Yvet during the Yuen Kong Kindergarten closure crisis.
She also provided Yvet with information about the Temple Street terrorist attack, which she learned from a customer.