yeah, Teresa is very funny in the beginning of the show, especially the way she laughs. she was the reason I'm continuing to watch. But later, she got slight boring. I hope it gets better later.
Esther seems to be so 'perfect' and sterile. Every damn scene or incident, she seems to be so calm, neutral
i think silly/humorous is more suitable. As they keep saying her 'silly in timid stuff, bright in important matters' Esther Kwan give an elegance/intelligent vibe she cant possibly take Teresa's role better than her