Considering that she was so overly protective about her sister that she was willing to stab people who didnt fit her ideals, I just can't imagine what would happen if she falls deeply in love with him... she might be more scarier than Jung Ah.
We used to see Kang Lim get the girls through the loop and ESW. Its nice to see him actually get the girl just by being himself for once, specifically because he doesn't know about the sister much at all from ESW.