Among her students is 10 year-old Henry. When Mary Margaret recognizes Henry’s own unhappiness, she gives him a fairy tale book with the intention of instilling in him some hope in a town where hope is often elusive. Henry devours the stories in the book and becomes possessed of the notion that it describes real characters and events. Mary Margaret’s simple act of giving Henry the book has set into motion a chain reaction that will change the town of Storybrooke and the lives of everyone in it.
Mary Margaret is an amalgamation of that which the Evil Queen would want her to be: she is lonely, insecure, self-punishing, pride-less, (up until this point) unquestioning, and fearful. What's more, she has been put in the position of taking care of other people's children while all she wants is a family of her own. She is unable to make herself happy. But in the end, there is a loop-hole in the curse that the Evil Queen forgot to close: Mary Margaret knows there is such a thing as hope, and while it is just beyond her reach, she has faith it will some day become attainable.
Early in Snow White's life, Snow White attempted to ride a horse only for it to go out of control. Luckily, Snow White was saved by a woman named Regina. Snow White told her father Regina saved her, so her father went over to Regina's house and proposed to her. Making Regina Snow's new step-mother.
Regina went on to murder King Leopold and attempt to murder Snow White as well.
Snow meets Prince James (whom she says looks more like a Charming) after she steals form one of the Evil Queens carriages. They end up falling in love, seeming to be each others soul mates. After going through many tough times Charming can often be found saying that he will always find her, which never seems to fail.
They were later married by Lancelot in front of James' mother Ruth, who had been shot by an arrow and soon after died.
At the formal wedding of Snow White and Prince Charming, during their vows, the Evil Queen crashes the wedding. As she walks up to the couple, Snow White shows no fear as she takes her prince's sword and threatens the Queen. She watches as the Evil Queen smirks at her and vows that she will have her revenge both on the couple and everyone else at the wedding who has had a happily ever after.
While Snow White is pregnant with Emma, she shares her fears of the Evil Queen's revenge with James. Willing to do anything to ease her mind, he agrees to let her meet with Rumplestiltskin. Snow White then makes a deal with Rumplestiltskin for information on the Queen's revenge in return for her unborn daughter's name.
After Emma is born, she tells James to place Emma in the magical wardrobe. She later finds him lying on the ground, severely injured, next to the wardrobe. She has a brief encounter with her stepmother as the Dark Curse envelops them.