Why didn't sun take her daughter on the plane? Chances are they will not leave the island anytime soon. Why not take the daughter?

I'm guessing because
1) She was in Korea with her grandmother. There wouldn't have been time to go back to get her
2) She can have a better life in Korea than on an island.

Same reason why I truly believe that Kate brought Aaron back to the hotel where Claire's Mom was staying and told her the truth about Aaron and gave her, her grandson to take care of...which was the right thing to do. Also, Claire in a vision told her not to bring Aaron back.

Why didn't sun take her daughter on the plane? Chances are they will not leave the island anytime soon. Why not take the daughter?

She was in Korea with Suns mother I believe and Sun didnt have much time to reconsider going back.

I wonder if Sun thinks she can get back OFF the island after she gets there. Maybe she thinks her daughter will be ok for now with Gramma.

Yeah, I think she just thinks she's going to go get Jin and then leave. Nobody has told her this is forever.

thats true. maybe she thinks widmore will get her off the island or somehow be able to get back quickly.

All the kids seem to be left behind. Aaron, Ji Yeon, Des has his child there still (as far as we know) and even Sawyer has a daughter back on the mainland. Hmm, that's two boys and two girls there. Are they going to be the next generation?