Catherine used Sheryl's ignorance about her dying business. Instead, Catherine purposely makes it sounds like her business is doing well and still earning millions of dollars every month. She was aware of Sheryl's personality and greediness and Catherine took advantage of it. She used Sheryl's greediness for money to make her invest in the dying shoe business.
Catherine is given a gift for communicating with her peers. Catherine is so good at speaking that is why she can always convince the person she is talking with. No wonder she can also convince Sheryl when they got a chance to talk before. And Sheryl was blinded with her greediness in money that is why she got swayed by Catherine's words.
Sheryl Tan is now cursing Catherine's existence until her death. How dare she lie at her face? Did she become that bold and shameless after not meeting each other for many years? Isn't she afraid that Sheryl might kill her once they meet each other again?