She looks very surprised to be called kind. She doesn't think anyone has ever called her kind in her whole life. She isn't someone who is kind, she's not someone who tries to be kind.

If Alice thinks she is kind then she truly has only met very cruel people in her life.

"Lots of people on this train do be being stupid, or babies." Or stupid babies, looking at you Emporio. But...

"But they do no usually be being mean or cruel. Which do be being good. It would be being worse being stuck on the train and having to be hiding all the time."