Responses
A) Yeon Woo *definitely* has feelings for Jiho, she's just traumatized because her previous lover died.
B) Jiho thought she'd noticed Woohui's feelings and tried to kiss her and got decked for it, so it's really not surprising she's decided to ignore her signals.
Jiho is too dense to notice Woohui's feelings(its a bit of a letdown considering Woohui's such a catch) or she's just blinded by her sunbae who doesnt even have feelings for her