It's getting hard. I choose Snow because I think she she had never done anything selfless. But that doesn't mean she is selfish only the least selfless here in my opinion.

We never see her make a self-less choice or even be in a situation where she had the chance too.

I don't remember her doing anything to help others.

She just didn't have enough screentime to do anything selfless.

SHE goes to save her sister so SHE can be free. So SHE can stop the eternal winter so SHE can marry Hans. And SHE can be saved. Then again she does sacrifice herself so perhaps it's me being a bias prune.

A bit at the beginning.

Snow is never put in that type of situation. I know Aurora is not that selfless either but at least she WAS a little selfless when she decided to go back to her kingdom and forget about the guy she loved (though he turned out to be the one she was supposed to marry anyway. Funny world) :3

Same as before.