Emma must not know that her parents believed only one person could go through the wardrobe or that her mother was planning to go through pregnant, but Emma was born early. She probably doesn’t realize that her dad basically died defending her as a baby to send her through safely. All she knows is that her parents sent her through the wardrobe without them, and that little Pinocchio was “supposed to be there” for her, but he wasn’t. She must’ve though her parents were unwilling to accompany her, and that the only companion they sent with her was a little boy who couldn’t handle that type of responsibility.
I agree with what was said above. Snow White took a huge risk of sacrifice just for Emma, and that action will speak volumes more than her words did at their initial reunion. Emma has been the one to sacrifice for love, risking her life to fight the dragon and save Henry in 1×22, and consequently, everyone else. Now, Emma gets to be the recipient of a mother’s sacrificial love, and that is going to have powerful effects on Emma and hopefully begin a healing process.
"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy